Published in Virology on June 01, 1993
An orally bioavailable antipoxvirus compound (ST-246) inhibits extracellular virus formation and protects mice from lethal orthopoxvirus Challenge. J Virol (2005) 3.36
Repulsion of superinfecting virions: a mechanism for rapid virus spread. Science (2010) 3.11
Vaccinia virus A17L open reading frame encodes an essential component of nascent viral membranes that is required to initiate morphogenesis. J Virol (1996) 2.77
Directed egress of animal viruses promotes cell-to-cell spread. J Virol (2002) 2.72
Vaccinia virus utilizes microtubules for movement to the cell surface. J Cell Biol (2001) 2.10
The envelope protein encoded by the A33R gene is required for formation of actin-containing microvilli and efficient cell-to-cell spread of vaccinia virus. J Virol (1998) 2.05
Extracellular vaccinia virus envelope glycoprotein encoded by the A33R gene. J Virol (1996) 2.03
Vaccinia virus glycoprotein A34R is required for infectivity of extracellular enveloped virus. J Virol (1996) 2.01
Characterization of early stages in vaccinia virus membrane biogenesis: implications of the 21-kilodalton protein and a newly identified 15-kilodalton envelope protein. J Virol (1997) 2.00
Visualization of intracellular movement of vaccinia virus virions containing a green fluorescent protein-B5R membrane protein chimera. J Virol (2001) 1.98
Extracellular enveloped vaccinia virus is resistant to complement because of incorporation of host complement control proteins into its envelope. Proc Natl Acad Sci U S A (1998) 1.97
Vaccinia virus infection disrupts microtubule organization and centrosome function. EMBO J (2000) 1.96
Vaccinia virus 15-kilodalton (A14L) protein is essential for assembly and attachment of viral crescents to virosomes. J Virol (1998) 1.91
Vaccinia virus A17L gene product is essential for an early step in virion morphogenesis. J Virol (1995) 1.89
A novel immunogold cryoelectron microscopic approach to investigate the structure of the intracellular and extracellular forms of vaccinia virus. EMBO J (1996) 1.88
Vaccinia virus intracellular movement is associated with microtubules and independent of actin tails. J Virol (2001) 1.87
The A34R glycoprotein gene is required for induction of specialized actin-containing microvilli and efficient cell-to-cell transmission of vaccinia virus. J Virol (1997) 1.87
Interactions between vaccinia virus IEV membrane proteins and their roles in IEV assembly and actin tail formation. J Virol (1999) 1.68
Ligand-induced and nonfusogenic dissolution of a viral membrane. Proc Natl Acad Sci U S A (2006) 1.62
Murine gammaherpesvirus 68 encodes a functional regulator of complement activation. J Virol (1999) 1.51
Vaccinia virus extracellular enveloped virion neutralization in vitro and protection in vivo depend on complement. J Virol (2008) 1.49
Epitope-mapping studies define two major neutralization sites on the vaccinia virus extracellular enveloped virus glycoprotein B5R. J Virol (2005) 1.44
Chimpanzee/human mAbs to vaccinia virus B5 protein neutralize vaccinia and smallpox viruses and protect mice against vaccinia virus. Proc Natl Acad Sci U S A (2006) 1.44
The vaccinia virus A33R protein provides a chaperone function for viral membrane localization and tyrosine phosphorylation of the A36R protein. J Virol (2001) 1.41
Vaccinia virus F12L protein is required for actin tail formation, normal plaque size, and virulence. J Virol (2000) 1.38
Functional analysis of vaccinia virus B5R protein: essential role in virus envelopment is independent of a large portion of the extracellular domain. J Virol (1998) 1.36
Visualization and characterization of the intracellular movement of vaccinia virus intracellular mature virions. J Virol (2005) 1.35
Biological characterization and next-generation genome sequencing of the unclassified Cotia virus SPAn232 (Poxviridae). J Virol (2012) 1.33
Golgi network targeting and plasma membrane internalization signals in vaccinia virus B5R envelope protein. J Virol (2000) 1.25
Virus-induced cell motility. J Virol (1998) 1.23
The extracellular domain of vaccinia virus protein B5R affects plaque phenotype, extracellular enveloped virus release, and intracellular actin tail formation. J Virol (1998) 1.23
Vaccination of BALB/c mice with Escherichia coli-expressed vaccinia virus proteins A27L, B5R, and D8L protects mice from lethal vaccinia virus challenge. J Virol (2008) 1.22
Inducible expression of the vaccinia virus A17L gene provides a synchronized system to monitor sorting of viral proteins during morphogenesis. J Virol (1996) 1.20
Similarities in the induction of post-Golgi vesicles by the vaccinia virus F13L protein and phospholipase D. J Virol (2002) 1.18
Poxviruses and the evolution of host range and virulence. Infect Genet Evol (2013) 1.16
Identification of second-site mutations that enhance release and spread of vaccinia virus. J Virol (2002) 1.16
Identification and analysis of three myristylated vaccinia virus late proteins. J Virol (1997) 1.13
Intracellular localization of vaccinia virus extracellular enveloped virus envelope proteins individually expressed using a Semliki Forest virus replicon. J Virol (2000) 1.12
Vaccinia virus A36R membrane protein provides a direct link between intracellular enveloped virions and the microtubule motor kinesin. J Virol (2004) 1.12
The vaccinia virus 4c and A-type inclusion proteins are specific markers for the intracellular mature virus particle. J Virol (1996) 1.11
Vaccinia virus WR gene A5L is required for morphogenesis of mature virions. J Virol (1999) 1.10
Molecular smallpox vaccine delivered by alphavirus replicons elicits protective immunity in mice and non-human primates. Vaccine (2009) 1.08
Envelope formation is blocked by mutation of a sequence related to the HKD phospholipid metabolism motif in the vaccinia virus F13L protein. J Virol (1999) 1.08
Mapping and functional analysis of interaction sites within the cytoplasmic domains of the vaccinia virus A33R and A36R envelope proteins. J Virol (2003) 1.07
Effects of deletion or stringent repression of the H3L envelope gene on vaccinia virus replication. J Virol (2000) 1.05
A survey of host range genes in poxvirus genomes. Infect Genet Evol (2012) 1.05
Orthopoxviruses require a functional ubiquitin-proteasome system for productive replication. J Virol (2008) 1.04
Differential innate immune signaling in macrophages by wild type vaccinia mature virus and a mutant virus deleting A26 protein. J Virol (2017) 1.03
Comparison of multiple vaccine vectors in a single heterologous prime-boost trial. Vaccine (2008) 1.03
The vaccinia virus B5 protein requires A34 for efficient intracellular trafficking from the endoplasmic reticulum to the site of wrapping and incorporation into progeny virions. J Virol (2007) 1.01
The ps/hr gene (B5R open reading frame homolog) of rabbitpox virus controls pock color, is a component of extracellular enveloped virus, and is secreted into the medium. J Virol (1993) 0.99
Intracellular trafficking of a palmitoylated membrane-associated protein component of enveloped vaccinia virus. J Virol (2003) 0.99
Vaccinia virus F13L protein with a conserved phospholipase catalytic motif induces colocalization of the B5R envelope glycoprotein in post-Golgi vesicles. J Virol (2001) 0.94
Role of genes that modulate host immune responses in the immunogenicity and pathogenicity of vaccinia virus. J Virol (2005) 0.92
MicroRNA regulation of glycoprotein B5R in oncolytic vaccinia virus reduces viral pathogenicity without impairing its antitumor efficacy. Mol Ther (2011) 0.92
Analysis of a vaccinia virus mutant expressing a nonpalmitylated form of p37, a mediator of virion envelopment. J Virol (1998) 0.91
Vaccinia virus E2L null mutants exhibit a major reduction in extracellular virion formation and virus spread. J Virol (2008) 0.91
Smallpox subunit vaccine produced in Planta confers protection in mice. Proc Natl Acad Sci U S A (2007) 0.90
Orthopoxvirus targets for the development of antiviral therapies. Curr Drug Targets Infect Disord (2005) 0.90
Characterization of the vaccinia virus A35R protein and its role in virulence. J Virol (2006) 0.89
Vaccinia virus A34 glycoprotein determines the protein composition of the extracellular virus envelope. J Virol (2007) 0.89
Lipid membranes in poxvirus replication. Viruses (2010) 0.88
Acidic residues in the membrane-proximal stalk region of vaccinia virus protein B5 are required for glycosaminoglycan-mediated disruption of the extracellular enveloped virus outer membrane. J Gen Virol (2009) 0.88
Major neutralizing sites on vaccinia virus glycoprotein B5 are exposed differently on variola virus ortholog B6. J Virol (2007) 0.86
Crystal structure of vaccinia viral A27 protein reveals a novel structure critical for its function and complex formation with A26 protein. PLoS Pathog (2013) 0.86
Cloak and Dagger: Alternative Immune Evasion and Modulation Strategies of Poxviruses. Viruses (2015) 0.84
Vaccinia mature virus fusion regulator A26 protein binds to A16 and G9 proteins of the viral entry fusion complex and dissociates from mature virions at low pH. J Virol (2012) 0.84
Loss of cytoskeletal transport during egress critically attenuates ectromelia virus infection in vivo. J Virol (2012) 0.82
Effect of the deletion of genes encoding proteins of the extracellular virion form of vaccinia virus on vaccine immunogenicity and protective effectiveness in the mouse model. PLoS One (2013) 0.81
Retrograde Transport from Early Endosomes to the trans-Golgi Network Enables Membrane Wrapping and Egress of Vaccinia Virus Virions. J Virol (2016) 0.80
Vaccinia virus B5 protein affects the glycosylation, localization and stability of the A34 protein. J Gen Virol (2010) 0.80
Multiple phosphatidylinositol 3-kinases regulate vaccinia virus morphogenesis. PLoS One (2010) 0.80
Modulation of the myxoma virus plaque phenotype by vaccinia virus protein F11. J Virol (2012) 0.80
Single-shot immunization with recombinant adenovirus encoding vaccinia virus glycoprotein A27L is protective against a virulent respiratory poxvirus infection. Vaccine (2010) 0.79
Identification of 10 cowpox virus proteins that are necessary for induction of hemorrhagic lesions (red pocks) on chorioallantoic membranes. J Virol (2014) 0.79
Development and comparison of a quantitative TaqMan-MGB real-time PCR assay to three other methods of quantifying vaccinia virions. J Virol Methods (2013) 0.79
BoHV-4-Based Vector Single Heterologous Antigen Delivery Protects STAT1(-/-) Mice from Monkeypoxvirus Lethal Challenge. PLoS Negl Trop Dis (2015) 0.78
Predicting the subcellular localization of viral proteins within a mammalian host cell. Virol J (2006) 0.78
The A33-dependent incorporation of B5 into extracellular enveloped vaccinia virions is mediated through an interaction between their lumenal domains. J Virol (2012) 0.78
Protein B5 is required on extracellular enveloped vaccinia virus for repulsion of superinfecting virions. J Gen Virol (2012) 0.78
Increased interaction between vaccinia virus proteins A33 and B5 is detrimental to infectious extracellular enveloped virion production. J Virol (2012) 0.77
Serological responses in humans to the smallpox vaccine LC16m8. J Gen Virol (2011) 0.77
Vaccinia viral protein A27 is anchored to the viral membrane via a cooperative interaction with viral membrane protein A17. J Biol Chem (2014) 0.77
Vaccinia virus uses retromer-independent cellular retrograde transport pathways to facilitate the wrapping of intracellular mature virions during viral morphogenesis. J Virol (2016) 0.77
Vaccinia virus protein complex F12/E2 interacts with kinesin light chain isoform 2 to engage the kinesin-1 motor complex. PLoS Pathog (2015) 0.76
Recombinant Sheep Pox Virus Proteins Elicit Neutralizing Antibodies. Viruses (2016) 0.75
Ectopic expression of vaccinia virus E3 and K3 cannot rescue ectromelia virus replication in rabbit RK13 cells. PLoS One (2015) 0.75
Vaccinia Virus Proteins A36 and F12/E2 Show Strong Preferences for Different KLC Isoforms. Traffic (2017) 0.75
General method for production and selection of infectious vaccinia virus recombinants expressing foreign genes. J Virol (1984) 10.98
Vaccinia virus: a selectable eukaryotic cloning and expression vector. Proc Natl Acad Sci U S A (1982) 7.81
Influenza A virus nucleoprotein is a major target antigen for cross-reactive anti-influenza A virus cytotoxic T lymphocytes. Proc Natl Acad Sci U S A (1985) 5.42
Infectious vaccinia virus recombinants that express hepatitis B virus surface antigen. Nature (1983) 5.25
Construction and characterization of an infectious vaccinia virus recombinant that expresses the influenza hemagglutinin gene and induces resistance to influenza virus infection in hamsters. Proc Natl Acad Sci U S A (1983) 4.69
Enhanced immunogenicity for CD8+ T cell induction and complete protective efficacy of malaria DNA vaccination by boosting with modified vaccinia virus Ankara. Nat Med (1998) 4.13
Infectious poxvirus vectors have capacity for at least 25 000 base pairs of foreign DNA. Gene (1983) 3.94
A46R and A52R from vaccinia virus are antagonists of host IL-1 and toll-like receptor signaling. Proc Natl Acad Sci U S A (2000) 3.69
Decreased virulence of recombinant vaccinia virus expression vectors is associated with a thymidine kinase-negative phenotype. Nature (1985) 3.62
Vaccinia virus encodes a soluble type I interferon receptor of novel structure and broad species specificity. Cell (1995) 3.51
A soluble receptor for interleukin-1 beta encoded by vaccinia virus: a novel mechanism of virus modulation of the host response to infection. Cell (1992) 3.36
Recombinant vaccinia virus primes and stimulates influenza haemagglutinin-specific cytotoxic T cells. Nature (1984) 3.21
Live recombinant vaccinia virus protects chimpanzees against hepatitis B. Nature (1984) 3.03
Vaccinia virus gene A36R encodes a M(r) 43-50 K protein on the surface of extracellular enveloped virus. Virology (1994) 2.89
The effects of metabolic inhibition on intracellular calcium and pH in isolated rat ventricular cells. J Physiol (1989) 2.86
Vaccinia virus expression vectors. J Gen Virol (1986) 2.84
Human cytomegalovirus-specific cytotoxic T cells. Relative frequency of stage-specific CTL recognizing the 72-kD immediate early protein and glycoprotein B expressed by recombinant vaccinia viruses. J Exp Med (1988) 2.73
A constitutively expressed vaccinia gene encodes a 42-kDa glycoprotein related to complement control factors that forms part of the extracellular virus envelope. Virology (1992) 2.67
Modified vaccinia virus Ankara undergoes limited replication in human cells and lacks several immunomodulatory proteins: implications for use as a human vaccine. J Gen Virol (1998) 2.55
IPTG-dependent vaccinia virus: identification of a virus protein enabling virion envelopment by Golgi membrane and egress. Nucleic Acids Res (1990) 2.41
Identification and characterization of an extracellular envelope glycoprotein affecting vaccinia virus egress. J Virol (1992) 2.35
Construction of synthetic immunogen: use of new T-helper epitope on malaria circumsporozoite protein. Science (1987) 2.24
Vaccinia virus intracellular mature virions contain only one lipid membrane. J Virol (1999) 2.24
Recognition of influenza A virus nucleoprotein by human cytotoxic T lymphocytes. J Gen Virol (1986) 2.16
Intracellular and extracellular vaccinia virions enter cells by different mechanisms. J Gen Virol (1998) 2.14
Vaccinia virus utilizes microtubules for movement to the cell surface. J Cell Biol (2001) 2.10
The vaccinia virus soluble alpha/beta interferon (IFN) receptor binds to the cell surface and protects cells from the antiviral effects of IFN. J Virol (2000) 2.08
Vaccinia, cowpox, and camelpox viruses encode soluble gamma interferon receptors with novel broad species specificity. J Virol (1995) 2.07
EGTA purity and the buffering of calcium ions in physiological solutions. Am J Physiol (1984) 2.03
Transient inhibition of polyoma virus synthesis by Sendai virus (parainfluenza I). I. Demonstration and nature of the inhibition by inactivated virus. J Virol (1972) 2.01
Vaccinia virus glycoprotein A34R is required for infectivity of extracellular enveloped virus. J Virol (1996) 2.01
Extracellular enveloped vaccinia virus is resistant to complement because of incorporation of host complement control proteins into its envelope. Proc Natl Acad Sci U S A (1998) 1.97
Blockade of chemokine activity by a soluble chemokine binding protein from vaccinia virus. J Immunol (1998) 1.94
A novel virus binding assay using confocal microscopy: demonstration that the intracellular and extracellular vaccinia virions bind to different cellular receptors. J Virol (1997) 1.86
Roles of vaccinia virus EEV-specific proteins in intracellular actin tail formation and low pH-induced cell-cell fusion. J Gen Virol (1998) 1.81
K201 modulates excitation-contraction coupling and spontaneous Ca2+ release in normal adult rabbit ventricular cardiomyocytes. Cardiovasc Res (2007) 1.76
Inducible gene expression from vaccinia virus vectors. Virology (1990) 1.76
Enhancement of MHC class I-restricted peptide-specific T cell induction by a DNA prime/MVA boost vaccination regime. Vaccine (1998) 1.74
Hepatitis B virus large surface protein is not secreted but is immunogenic when selectively expressed by recombinant vaccinia virus. J Virol (1986) 1.73
Inverse relation between prostate-specific antigen and insulin-like growth factor-binding protein 3 in bone metastases and serum of patients with prostate cancer. Lancet (1999) 1.70
Interactions between vaccinia virus IEV membrane proteins and their roles in IEV assembly and actin tail formation. J Virol (1999) 1.68
Cytokine receptors encoded by poxviruses: a lesson in cytokine biology. Immunol Today (1995) 1.68
Comparative risks and costs of male and female sterilization. Am J Public Health (1985) 1.65
Potentiometric measurements of stoichiometric and apparent affinity constants of EGTA for protons and divalent ions including calcium. Biochim Biophys Acta (1985) 1.65
Recognition of cloned influenza virus hemagglutinin gene products by cytotoxic T lymphocytes. J Virol (1986) 1.62
Production and characterisation of a monoclonal antibody to human papillomavirus type 16 using recombinant vaccinia virus. J Clin Pathol (1990) 1.57
Calcium-induced calcium release activates contraction in intact cardiac cells. Pflugers Arch (1989) 1.57
The vaccinia virus A36R protein is a type Ib membrane protein present on intracellular but not extracellular enveloped virus particles. Virology (2000) 1.56
Vaccinia virus serpin B13R (SPI-2) inhibits interleukin-1beta-converting enzyme and protects virus-infected cells from TNF- and Fas-mediated apoptosis, but does not prevent IL-1beta-induced fever. J Gen Virol (1997) 1.54
The vaccinia virus A27L protein is needed for the microtubule-dependent transport of intracellular mature virus particles. J Gen Virol (2000) 1.52
Vaccinia virus gene B1R encodes a 34-kDa serine/threonine protein kinase that localizes in cytoplasmic factories and is packaged into virions. Virology (1992) 1.50
Antibodies against vaccinia virus do not neutralize extracellular enveloped virus but prevent virus release from infected cells and comet formation. J Gen Virol (1997) 1.49
The genome sequence of Yaba-like disease virus, a yatapoxvirus. Virology (2001) 1.48
The influence of tackle parameters on the propensity for injury in international football. Am J Sports Med (2004) 1.47
Lack of HIV infection and condom use in licensed prostitutes. Lancet (1986) 1.46
Vaccinia virus strains Lister, USSR and Evans express soluble and cell-surface tumour necrosis factor receptors. J Gen Virol (1999) 1.46
Preliminary studies of absorption and excretion of benoxaprofen in man. Br J Clin Pharmacol (1977) 1.46
Replication of the influenza virus genome. Virology (1982) 1.45
Plasmodium knowlesi sporozoite antigen: expression by infectious recombinant vaccinia virus. Science (1984) 1.42
S100A1: a regulator of myocardial contractility. Proc Natl Acad Sci U S A (2001) 1.42
Testicular prosthesis placement: a new technique. BJU Int (1999) 1.40
A mechanism for the inhibition of fever by a virus. Proc Natl Acad Sci U S A (1996) 1.39
Field evaluation of Haemophilus somnus bacterin. Vet Med Small Anim Clin (1977) 1.38
Vaccinia virus F12L protein is required for actin tail formation, normal plaque size, and virulence. J Virol (2000) 1.38
Circumcision as a risk factor for urethritis in racial groups. Am J Public Health (1987) 1.38
The relationship between intracellular calcium and contraction in calcium-overloaded ferret papillary muscles. J Physiol (1985) 1.37
Purified multiplication-stimulating activity from rat liver cell conditioned medium: comparison of biological activities with calf serum, insulin, and somatomedin. J Cell Physiol (1974) 1.37
Difficulties encountered in the search for the etiologic agents of destructive periodontal diseases. J Clin Periodontol (1987) 1.35
Vaccinia virus serpins B13R (SPI-2) and B22R (SPI-1) encode M(r) 38.5 and 40K, intracellular polypeptides that do not affect virus virulence in a murine intranasal model. Virology (1995) 1.34
The PA influenza virus polymerase subunit is a phosphorylated protein. J Gen Virol (1998) 1.33
Antibody neutralization of the extracellular enveloped form of vaccinia virus. Virology (2001) 1.32
Immunogenicities of intravenous and intramuscular administrations of modified vaccinia virus Ankara-based multi-CTL epitope vaccine for human immunodeficiency virus type 1 in mice. J Gen Virol (1998) 1.32
Simultaneous measurements of action potential duration and intracellular ATP in isolated ferret hearts exposed to cyanide. Circ Res (1989) 1.31
An evaluation of direct access radiology in general practice. J R Coll Gen Pract (1979) 1.31
Anchoring a secreted plasmodium antigen on the surface of recombinant vaccinia virus-infected cells increases its immunogenicity. Mol Cell Biol (1986) 1.31
Metabolic consequences of increasing intracellular calcium and force production in perfused ferret hearts. J Physiol (1986) 1.30
A model for vaccinia virus pathogenesis and immunity based on intradermal injection of mouse ear pinnae. J Gen Virol (1999) 1.29
Immunogenicity of a Haemophilus somnus bacterin in cattle. Am J Vet Res (1978) 1.27
The electrophysiological and mechanical effects of 2,3-butane-dione monoxime and cytochalasin-D in the Langendorff perfused rabbit heart. Exp Physiol (2004) 1.25
Clinical performance of a rule-based decision support system for mechanical ventilation of ARDS patients. Proc Annu Symp Comput Appl Med Care (1993) 1.23
Virus-induced cell motility. J Virol (1998) 1.23
The extracellular domain of vaccinia virus protein B5R affects plaque phenotype, extracellular enveloped virus release, and intracellular actin tail formation. J Virol (1998) 1.23
Overexpression of FK506-binding protein FKBP12.6 in cardiomyocytes reduces ryanodine receptor-mediated Ca(2+) leak from the sarcoplasmic reticulum and increases contractility. Circ Res (2001) 1.21
Nucleotide sequence of 21.8 kbp of variola major virus strain Harvey and comparison with vaccinia virus. J Gen Virol (1992) 1.20
Vaccinia virus encodes an active thymidylate kinase that complements a cdc8 mutant of Saccharomyces cerevisiae. J Biol Chem (1991) 1.20
Vaccinia virus core protein VP8 is required for virus infectivity, but not for core protein processing or for INV and EEV formation. Virology (1994) 1.20
A vaccinia serine protease inhibitor which prevents virus-induced cell fusion. J Gen Virol (1992) 1.20
The contribution of intracellular acidosis to the decline of developed pressure in ferret hearts exposed to cyanide. J Physiol (1987) 1.20
Prognostic significance of vascular endothelial growth factor protein levels in oral and oropharyngeal squamous cell carcinoma. J Clin Oncol (2000) 1.19
Rapid method for the purification of DNA from subgingival microorganisms. Oral Microbiol Immunol (1989) 1.19
The mechanism of early contractile failure of isolated rat ventricular myocytes subjected to complete metabolic inhibition. J Physiol (1989) 1.19
Metabolic changes during ischaemia and their role in contractile failure in isolated ferret hearts. J Physiol (1992) 1.19
Vaccinia DNA ligase complements Saccharomyces cerevisiae cdc9, localizes in cytoplasmic factories and affects virulence and virus sensitivity to DNA damaging agents. EMBO J (1991) 1.19
Heterogeneous changes in action potential and intracellular Ca2+ in left ventricular myocyte sub-types from rabbits with heart failure. Cardiovasc Res (2000) 1.19
The effects of 2,3-butanedione monoxime on initial heat, tension, and aequorin light output of ferret papillary muscles. Pflugers Arch (1990) 1.19
Vaccinia virus homologues of the Shope fibroma virus inverted terminal repeat proteins and a discontinuous ORF related to the tumor necrosis factor receptor family. Virology (1991) 1.18
Undetectable ultrasensitive PSA after radical prostatectomy for prostate cancer predicts relapse-free survival. Br J Cancer (2000) 1.17