Results 221 to 230 of about 599,985 (268)

Activation of Human Immunodeficiency Virus by Herpes Simplex Virus

Journal of Infectious Diseases, 1992
Heterologous viruses have been examined for their ability to accelerate the course of infection with the human immunodeficiency virus (HIV) type 1. In this study, ACH-2 cells persistently infected with HIV-1 exhibited augmented HIV-1 replication as a result of superinfection with herpes simplex virus (HSV) type 1.
M P, Golden, S, Kim, S M, Hammer, E A, Ladd, P A, Schaffer, N, DeLuca, M A, Albrecht   +6 more
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Biochemical suppression of tumor virus activity

Cancer, 1974
DNA and RNA polymerases and their templates play a central role in the control of gene expression. As an approach to a scientific chemotherapy to control nucleic acid-directed disease, we have used the highly purified RNA-directed DNA polymerase of the avian myeloblastosis virus (AMV) as a test enzyme to search for inhibitors of DNA polymerase.
M, Green, G F, Gerard, D P, Grandgenett, C, Gurgo, A M, Rankin, M R, Green, D M, Cassell   +6 more
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Antiapoptotic activity of bovine papilloma virus

International Journal of Oncology, 1996
Transformed fibroblasts have been recently shown to be sensitive for induction of apoptosis by TGF-beta-treated neighbouring untransformed cells. Cells transformed by a variety of different transformation principles were regularly sensitive for intercellular induction of apoptosis, but fibroblasts transformed by bovine papillomavirus (BPV) represented ...
Melchinger, W., Strauss, S., Zucker, Birgit, Bauer, Georg   +3 more
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Hemolytic activity of rubella virus

Virology, 1978
Abstract Hemolytic activity of rubella virus was demonstrated by chelating Ca2+ with EDTA after adsorption of the virus to erythrocytes in the presence of the ion. The hemolysis was inhibited by rabbit serum immunized with the virus. Furthermore, the hemolytic activity co-sedimented in sucrose density gradient centrifugation with the hemagglutinating
openaire   +2 more sources

Leukemia Virus Activation during Homograft Rejection

Science, 1973
Activation of murine leukemia viruses, as detected by the mixed culture cytopathogenicity (XC) assay, followed the transplantation of A/J skin onto immunosuppressed BALB/c mice. Virus was found in most of the mice receiving both skin grafts and antilymphocyte serum, but not in animals receiving either the serum alone, skin graft alone, or no treatment.
M S, Hirsch, D A, Ellis, P H, Black, A P, Monaco, M L, Wood   +4 more
openaire   +2 more sources

Chronic, active Epstein-Barr virus infection

Current Opinion in Hematology, 2000
Chronic active Epstein-Barr virus (EBV) infection is an uncommon outcome of EBV infection and may present as a waxing and waning or fulminant syndrome. Unlike acute infectious mononucleosis, wherein EBV establishes lifelong infection and survives by maintaining a delicate balance with the host as a latent infection, in chronic active EBV infection the ...
D M, Maia, A L, Peace-Brewer
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Antibody-mediated activation of sindbis virus

Virology, 1988
The biological activity of an anti-Sindbis monoclonal antibody (MCAB 49) has been explored. The antibody recognizes an epitope on the E2 glycoprotein of Sindbis virus and, in the presence of complement (C'), neutralizes virus infectivity. In the absence of C', reaction of the antibody with our laboratory strain of Sindbis, SB, increased the number of ...
D C, Flynn, R A, Olmsted, J M, Mackenzie, R E, Johnston   +3 more
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Hemagglutinating activity of bovine papilloma virus

Virology, 1974
Abstract Purified preparations of bovine papilloma virus (BPV) agglutinate mouse erythrocytes. Maximal hemagglutination (HA) activity occurs at 4°, between pH 6.8 and 8.4. The adsorbed virus is readily eluted at 37°. The BPV receptors on mouse erythrocytes show a high resistance to receptor-destroying enzyme or Influenza A2 neuraminidase.
M, Favre, F, Breitburd, O, Croissant, G, Orth   +3 more
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Activity of andrographolide against dengue virus

Antiviral Research, 2017
Dengue is the most prevalent arthropod-transmitted viral illness of humans, with an estimated 100 million symptomatic infections occurring each year and more than 2.5 billion people living at risk of infection. There are no approved antiviral agents against dengue virus, and there is only limited introduction of a dengue vaccine in some countries ...
Patcharee Panraksa, Suwipa Ramphan, Sarawut Khongwichit, Duncan R. Smith   +3 more
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Influenza virus neuraminidase with hemagglutinin activity

Virology, 1984
Isolated intact influenza virus neuraminidase (NA) molecules of the N9 subtype have been found to possess hemagglutinin (HA) activity which, at equivalent protein concentration, was fourfold higher than that of isolated hemagglutinin molecules of the H3 subtype.
W G, Laver, P M, Colman, R G, Webster, V S, Hinshaw, G M, Air   +4 more
openaire   +2 more sources