Table 3.

Histo-blood group glycosyltransferases, carbohydrates and mucosa and red blood cell phenotypes.

ABO	FUTII	FUTIII	Carbohydrates	Mucosa phenotypes	Red blood cell phenotypes
A, B, AB, O	Active	Active	H, A and/or B Lea, Leb, ALeb, BLeb	Secretor Lewis positive	A, B, AB, O Le(a−b+)
A, B, AB, O	Active	Inactive	H, A and/or B	Secretor Lewis negative	A, B, AB, O Le(a−b−)
A, B, AB, O	Inactive	Active	Lea	Non-secretor Lewis positive	A, B, AB, O Le(a+b−)
A, B, AB, O	Inactive	Inactive	POa	Non-secretor Lewis negative	A, B, AB, O Le(a−b−)

^aType 1 precursor oligosaccharyde.