six major apo e phenotypes were shown , in agreement with the current genetic model which is composed of 3 major apo e isoproteins , apo e-4 , apo e-3 and apo e-2 , resulting from three apo e alleles , epsilon 4 , epsilon 3 and epsilon 2 , at a single genetic locus .
C0052201
apo e-4
C0003595
apo e