Assertion: h antigen | /r/HasProperty | modified by glycosyltransferase
Facets:
value: to produce the antigens
type: PURPOSE
Source sentences:
text: In people with the secretor genotype, the enzyme converts a precursor substance found in body fluids to the H antigen, which is then modified by the glycosyltransferases encoded by the ABO gene to produce the antigens corresponding to the person's ABO blood type.