[Karyologic study of transplantable cell lines. II. Comparative analysis of lines HEp-2, FL and RH].

A comparative karyologic analysis of three continuous cell lines of different origin (HEp-2, FL and RH) has shown them differing from each other both in the number of chromosomes, and in marker chromosomes. In cultures HEp-2, the modal class consists of cells possessing 58-59 chromosomes, cells in cultures Fl and RH have 60 and 66 chromosomes, resp. Marker chromosomes both similar and not similar, i.e. characteristic of a given cell line only were found in all the investigated cell lines. The data obtained do not exclude a possibility of contamination of studied continuous cell cultires with HeLa cell line.