title: Progressive karyotypic changes in vitro in the Ehrlich Lettré ascites subline SZEL.
mesh_terms: D000818:Animals; D002286:Carcinoma, Ehrlich Tumor / Q000235:genetics* / Q000503:physiopathology; D002460:Cell Line; D002875:Chromosomes; D046508:Culture Techniques; D004171:Diploidy; D007621:Karyotyping; D051379:Mice; D009368:Neoplasm Transplantation; D013997:Time Factors