blood group-specific lectins , such as dolichos biflorus agglutinin or helix pomatia agglutinin ( group a-specific ) , griffonia simplicifolia agglutinin-i b4 ( group b-specific ) , and ulex europaeus agglutinin i ( group h-specific ) could recognize a , b , and h antigens , respectively , only in mature secretory granules ( mature sg ) , which were found preferentially in cells in the late phase of the maturation cycle .
C0886515
secretory granules
C0007634
cells