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Mol Cell Biol. 1985 April; 5(4): 728-733

Cells transformed with a ts viral src mutant are temperature sensitive for in vivo growth.

ABSTRACT

Studies on ts mutants of avian sarcoma viruses have previously implicated the src gene product (pp60src) kinase function in in vitro transformation. The role of src in vivo, however, has not been clearly defined. Using a sensitive and quantitative assay that was developed in chicken embryos (Chambers et al., Cancer Res. 42:4018-4025, 1982), we tested the in vivo tumorigenic properties of cells transformed with LA23, an avian sarcoma virus that is temperature sensitive for in vitro transformation. We found that the in vivo growth ability of these cells was temperature sensitive and that this in vivo behavior correlated with the in vitro transformation behavior (growth in soft agar and saturation density).