title: A case of invasive acanthosis in the skin of the penis of a sperm-whale (Physeter catodon L.).
mesh_terms: D000818:Animals; D002591:Cetacea; D008297:Male; D010409:Penile Diseases / Q000473:pathology / Q000662:veterinary*; D012867:Skin / Q000033:anatomy & histology / Q000473:pathology*; D012871:Skin Diseases / Q000473:pathology / Q000662:veterinary*