Assertion: umbilical cord | /r/MadeOf | wharton's jelly
Facets:
Source sentences:
text: The umbilical cord contains Wharton's jelly, a gelatinous substance made largely from mucopolysaccharides which protects the blood vessels inside.
text: The umbilical cord contains Wharton's jelly, a gelatinous substance made largely from mucopolysaccharides which protects the blood vessels inside.