Blood supply to primitive mammalian brains.
D000717:Anatomy, Comparative; D000818:Animals; D001158:Arteries; D005075:Biological Evolution; D001921:Brain / Q000098:blood supply*; D002196:Capillaries; D006652:Histological Techniques; D008322:Mammals / Q000033:anatomy & histology*; D009893:Opossums; D004490:Xenarthra