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Biomedical subjects

J F Enders

Publications and source records attributed to J F Enders.

At least 19 recordsLinked to original sources
PubMed1970

Virus-specific deoxyribonucleic acid in simian virus 40-exposed hamster cells: correlation with S and T antigens.

Several homologous hamster embryonic cell lines, transformed in association with simian virus (SV) 40 infection, were examined for the presence of deoxyribonucleic acid (DNA) complementary to SV40 ribonucleic acid (RNA) made in vitro. The methods employed permitted the detection of 10(-5) mug of viral DNA in 100 mug of cellular DNA, corresponding to one-fifth of an SV40 DNA molecule per cell. Those lines which contained both the SV40 surface (S) and tumor (T) antigens also contained DNA complementary to SV40 RNA synthesized in vitro. In contrast, neither of two lines which contained S, but not T, antigen contained detectable DNA complementary to SV40 RNA. These findings suggest that the production of S antigen does not depend upon the persistence of SV40 DNA in transformed cells.

Animals↗
PubMed1969

Virus-specific nucleic acids in SV40-exposed hamster embryo cell lines: correlation with S and T antigens.

A number of homologous SV40-exposed hamster embryonic cell lines were examined for the presence of RNA complementary to SV40 DNA. Only those lines containing the SV40 T antigen were found to have such virus-specific RNA. In lines containing the SV40 S antigen, but not the SV40 T antigen, virus-specific RNA was not detected. These findings suggest that the S antigen is not coded for directly by the SV40 genome.

Animals↗
PubMed1968

Vaccinia virus replication and cytopathic effect in cultures in phytohemagglutinin-treated human peripheral blood leukocytes.

Titers of vaccinia virus consistently increased in cultures of washed phytohemagglutinin-treated, peripheral blood leukocytes of a vaccinated adult. Concomitantly, a gradual rise occurred in the numbers of infected leukocytes, as determined by the infective center assay. Increase in viral titer was accompanied by cell injury, decline in cell numbers, and decreased acid production. Leukocytes not pretreated with phytohemagglutinin appeared to form infective centers after exposure to the vaccinia agent, but they did not replicate infectious virus. For viral replication, the continuous presence of phytohemagglutinin was required.

Culture Techniques↗