title: Endometrial differentiation in the pregnant sow and the necrotic tips of the allantochorion.
mesh_terms: D000818:Animals; D004717:Endometrium / Q000166:cytology*; D004971:Estrus; D005321:Extraembryonic Membranes / Q000166:cytology*; D005260:Female; D005865:Gestational Age; D009336:Necrosis; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D013552:Swine / Q000033:anatomy & histology*