A cytogenetic analysis of 9 permanent suspension cell lines was performed. Cell lines were obtained from Papio hamadryas and Macaca arctoides cells by different methods. Five cell lines originated from non-malignant parental cells. Lines SPG-5 and SPG-6 were analysed at early stages of cultivation, with normal karyotypes being identified. In cell lines PL-11, MAL-1 and MAL-4 pathological clones with structural and numerical chromosomal rearrangements appeared only following a long-term cultivation. This phenomenon may be due presumably to the influence of cultivation on karyotype variability. In cell line LUG-4 chromosome marker 17p+ was found at early stages of cultivation. In sublines E9-1, E1-1 and E5-1, established from line LUG-4 by cloning, 17p+ chromosomal marker was found persisting. The presence of the marker 17p+ in all the cells at early passages testifies that the cell material from Papio with lymphoma, which was used for this line, might have the same chromosomal damage in its initial karyotype.