title: Effect of serum concentration on the chromosome number of a rat liver epithelial cell line.
abstract: The dispersion of the chromosome number was studied in a rat liver cell line which was grown up to the 65th passage in our standard culture medium (Ham F10 containing 10% fetal calf and 10% adult human sera) and thereafter cultured in the same chemical medium supplemented with decreasing serum concentrations. Until the serum concentration changes, the parental cell line exhibited for several passages a very wide range of chromosome numbers, from 35 up to 83. This range narrowed down to 42 when the cells were passed in a 5% fetal calf serum medium. Then, after several passages in this 5% serum medium, when subculturing again in 20% serum, a second cell population, hypotetraploid, progressively appeared until a compound population, hypotetraploid, progressively appeared until a compound population reached a 45-80 bimodal state. Another sub-line grown in 1% fetal calf serum exhibited similar chromosome evolution but returned to a slight aneuploid state (43 chromosomes) in media supplemented with 20% serum of different types.
mesh_terms: D000782:Aneuploidy; D000818:Animals; D002460:Cell Line; D003470:Culture Media; D006133:Growth Substances / Q000097:blood; D007621:Karyotyping; D008099:Liver / Q000166:cytology*; D008297:Male; D051379:Mice; D051381:Rats
chemical_list: D003470:Culture Media; D006133:Growth Substances