title: Prenatal size-age relationships and external morphology in the Mongolian gerbil (Meriones unguiculatus).
mesh_terms: D000818:Animals; D000830:Animals, Laboratory; D001947:Breeding; D005260:Female; D005849:Gerbillinae / Q000033:anatomy & histology / Q000196:embryology* / Q000254:growth & development / Q000502:physiology; D005865:Gestational Age; D011247:Pregnancy; D012726:Sexual Behavior, Animal