title: Further observations on the incidence of anterior and posterior groups of portal vessels in the avian pituitary.
mesh_terms: D000818:Animals; D001717:Birds; D010902:Pituitary Gland / Q000033:anatomy & histology / Q000098:blood supply*; D010904:Pituitary Gland, Posterior / Q000033:anatomy & histology / Q000098:blood supply*