Capillary vessels and pericapillary axon terminals of the subfornical organ.
D000818:Animals; D001369:Axons / Q000648:ultrastructure; D002196:Capillaries / Q000294:innervation / Q000648:ultrastructure; D002415:Cats; D008854:Microscopy, Electron; D009490:Neurosecretory Systems / Q000098:blood supply*; D051381:Rats; D013045:Species Specificity; D013356:Subfornical Organ / Q000098:blood supply*