Fine structure of the vessels of the hypophysial portal system of the white-crowned sparrow, Zonotrichia leucophrys gambelii.
D000818:Animals; D001485:Basement Membrane; D001717:Birds / Q000033:anatomy & histology*; D002196:Capillaries / Q000166:cytology*; D002536:Cerebral Arteries / Q000166:cytology*; D003392:Cranial Sinuses / Q000166:cytology*; D003593:Cytoplasm; D005260:Female; D007031:Hypothalamus / Q000098:blood supply; D008297:Male; D008854:Microscopy, Electron; D010902:Pituitary Gland / Q000098:blood supply*; D013194:Staining and Labeling