## Abstract Primary and secondary Chinese hamster (ChH) embryo cells infected with SV40 exhibited chromosomal changes within one cell generation (24 h). The initial change seen is an increase in the number of polyploid metaphases (>10%). The majority of the polyploid cells are tetraploid (8Γ), howe
Resistance of teratocarcinoma stem cells to infection with simian virus 40: Early events
β Scribed by Douglas E. Swartzendruber; Thomas D. Friedrich; John M. Lehman
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 612 KB
- Volume
- 93
- Category
- Article
- ISSN
- 0021-9541
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β¦ Synopsis
Multipotential stem cells of a murine teratocarcinoma are resistant to typical infection with either polyoma virus (PV) or Simian virus 40 (SV,o). Differentiated progeny of the stem cells are susceptible to infection in a manner identical to other mouse somatic cells, i.e., they are permissive for PV and nonpermissive for SV,,. The early interactions between the stem cells (embryonal carcinoma or EC cells) and SV,, and PV were studied. Virions adsorbed to and penetrated into the cytoplasm and nucleus of EC cells, but did not induce
π SIMILAR VOLUMES
## Abstract Cultures of the multipotential stem cell, embryonal carcinoma (EC), of a murine teratocarcinoma were treated with 5βbromodeoxyuridine (BrdU). Within 2β4 days at concentrations of 1β50 mΜgm/ml of BrdU, there was a marked change in the morphology of cells observed by light and electron mi
## Abstract The hostβvirus interactions of Simian virus 40 (SV^40^) and polyoma virus (Py) with cell lines established from a teratocarcinoma were studied. The cells utilized in this study were the multipotential stem cell of the teratocarcinoma, embryonal carcinoma, and differentiated cells derive
Simian virus 40 (SV40) is capable of inducing cellular DNA synthesis in permissive and nonpermissive cells. Utilizing flow cytometry, we analyzed the DNA content changes in two diploid human cell strains and two monkey cell lines. The osteogenesis imperfecta (OI) human skin fibroblasts were induced
Simian immunodeficiency virus (SIV) as well as human immunodeficiency virus (HIV) induce polyclonal B-cell activation and are associated with the appearance of lymphomas in their respective hosts in either the presence or the absence of other co-infecting viruses such as Epstein-Barr virus (EBV). Ho
## Abstract Infection of secondary Chinese hamster cells with SV40 virus induces a population of cells into consecutive S periods. These changes in DNA content were examined at various times post infection by means of flow microfluorometry (FMF) which enabled a kinetic analysis to be made. At 12 h