Growth and transplantability of clonally related tumorigenic murine cell lines

A malignant cell line derived from the s.c. inoculation of Adenovirus 12 into a CBA mouse has been isolated in vitro, cloned, and within 10 passages the clones have been investigated for their karyotype, morphology, growth rate, saturation density and response to plant lectin in vitro, and their tumorigenicity and growth rate in vivo. The cell lines rapidly acquired a highly heterogeneous karyotype, but remained homogeneous with respect to more complex physiological parameters. Examination of the cellular characteristics has indicated that the rate of growth of the cell lines in vivo, but not their tumorigenicity, may be related to their in vitro potentials. The clones responded differently to the cytotoxic effects of concanavalin A, but there was no correlation between the effect of the lectin and the malignant potential of the cells.