title: Fertile mule in China and her unusual foal.
mesh_terms: D000818:Animals; D002681:China; D002802:Cholinesterases / Q000097:blood; D002875:Chromosomes / Q000648:ultrastructure; D005260:Female; D005298:Fertility; D006824:Hybridization, Genetic; D007621:Karyotyping; D010527:Perissodactyla / Q000235:genetics*
chemical_list: D002802:Cholinesterases