Assertion: woolly mammoth's skin | /r/HasAspect | sebaceous glands
Facets:
Source sentences:
text: the adaptations went even further as the skin itself had sebaceous glands that would have secreted sebum,‭ ‬an oily substance primarily composed of dead fat cells into the hair.‭ ‬Sebum has a number of functions that help maintain skin and hair integrity,‭