title: The early development of some hystricomorph rodents with particular reference to Chinchillia laniger.
mesh_terms: D000818:Animals; D002682:Chinchilla / Q000196:embryology*; D010064:Embryo Implantation; D005260:Female; D006168:Guinea Pigs / Q000196:embryology; D010063:Ovum; D010828:Physiology, Comparative; D011247:Pregnancy; D012377:Rodentia / Q000196:embryology*; D013997:Time Factors