Gov phenotyping of the 106 donors analyzed.

Platelets from 106 donors were tested for Gov phenotype by MAIPA using well-characterized Gov^a and Gov^b antisera. Antiserum-specific absorbance values (490 nm) are shown. Panel 1 donors, filled circles; panels 2 and 3 donors, squares. Vertical and horizontal dotted lines indicate Gov^a and Gov^bpositivity, respectively, as defined by mean reactivity (± 3 SD) with control AB sera in the 106 samples examined. The 3 panel 3 donors not exhibiting concordance of phenotype and genotype are shown as filled squares.