The cervix of the sow during oestrus.
D000818:Animals; D002404:Catheterization / Q000662:veterinary; D002584:Cervix Uteri / Q000033:anatomy & histology*; D004971:Estrus; D005260:Female; D007315:Insemination, Artificial / Q000662:veterinary; D011247:Pregnancy; D013552:Swine / Q000033:anatomy & histology*