Assertion: exoskeleton | /r/MadeOf | tough protein
Facets:
value: mostly
type: DEGREE
Source sentences:
text: The body covering or exoskeleton of arthropoda is made of a tough protein called chitin, a long chain polymer comparable to cellulose.
text: The body covering or exoskeleton of arthropoda is made of a tough protein called chitin, a long chain polymer comparable to cellulose.
text: The exoskeleton of arthropods is made of a tough protein called chitin, a long chain polymer comparable to cellulose.
text: The exoskeleton of arthropoda is made mostly of a tough protein called chitin, a long chain polymer comparable to cellulose.