Platelets Erythrocytes Monocyte Neutrophils Lymphocyte
Neutrophil multilobed nucleus Eosinophil bilobed nucleus, red cytoplasmic granules Basophil bilobed nucleus, purplish-black cytoplasmic granules
Small lymphocyte; large spherical nucleus Monocyte; kidney-shaped nucleus
ABO Blood Typing
Blood being tested Serum Anti-A Anti-B Type AB (contains agglutinogens A and B; agglutinates (clumps) with both sera) RBCs Type A (contains agglutinogen A; agglutinates with anti-A) Type B (contains agglutinogen B; agglutinates with anti-B) Type O (contains no agglutinogens; does not agglutinate with either serum)
O A B AB AB