title: Studies on the karyotype and serum transferrin in the Ceylon black rat, Rattus rattus, having 40 chromosomes.
mesh_terms: D000818:Animals; D002875:Chromosomes; D005260:Female; D007621:Karyotyping; D008297:Male; D051381:Rats / Q000145:classification*; D013188:Sri Lanka; D014168:Transferrin / Q000032:analysis*
chemical_list: D014168:Transferrin