Assertion: carotenoid | /r/HasProperty | c 40 tetraterpenoids
Facets:
value: usually
type: DEGREE
Source sentences:
text: Carotenoids occurring in plants are usually C 40 tetraterpenoids built from eight C 5 isoprenoid units and belong to the class of hydrocarbons (carotenes) or their oxygenated derivatives (xantophylls).