Similarity in the number of corpora lutea during two stages of pregnancy in swine.
D000818:Animals; D002606:Charcoal; D003338:Corpus Luteum / Q000473:pathology / Q000502:physiology*; D005260:Female; D007281:Ink; D010060:Ovulation / Q000502:physiology*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D013552:Swine / Q000502:physiology*
D002606:Charcoal