Assertion: h antigen | /r/HasProperty | required for abo blood group antigens
Facets:
value: to be formed.[note
type: PURPOSE
Source sentences:
text: The H antigen is required for ABO blood group antigens to be formed.[note 1] The Se gene, which encodes the enzyme α-2-L-fucosyltransferase, controls the formation of H antigen in bodily secretions.