Assertion: protoplasm's material | /r/HasProperty | useless product
Facets:
Source sentences:
text: These materials may be a useful (secretion) or useless product (excretion) e.g. digestive enzymes and hormones or urine and sweat etc.
text: These materials may be useful (secretion) or useless (excretion) products, such as digestive enzymes and hormones, urine and sweat etc.
text: These materials may be a useful (secretion) or useless product (excretion) e.g. digestive enzymes and hormones or urine and sweat etc.