Vascular factors in pneumatization.
D000818:Animals; D001846:Bone Development; D001842:Bone and Bones / Q000098:blood supply* / Q000166:cytology*; D002645:Chickens; D006811:Humerus / Q000166:cytology; D008297:Male; D010010:Osteoclasts; D013701:Temporal Bone / Q000166:cytology