Assertion: melanin | /r/HasProperty | ubiquitous
Facets:
value: in the animal kingdom
type: LOCATION
Source sentences:
text: The article does a nice job of pointing out that melanin is ubiquitous in the animal kingdom (except in spiders), but is much too silent on the question of whether melanin is found in plants.
text: Melanins are ubiquitous natural biopolymers owning widespread distribution in various parts of living organisms, such as hair, skin, mucous membranes, brain medulla, and eyes.2