An individual's ABO blood type is commonly determined by using antibodies specific for type A and type B glycoproteins. Antibody-A (Anti-A) and Antibody-B (Anti-B) combine with A and B antigens, ...

The hemagglutination produced by some serums ... Serial or paired specimens of blood were tested in 12 patients of the first group, covering periods ranging from one to six months after onset ...

Hemagglutination would be positive for maternal ... whereas adult hemoglobin is released. The mother's blood is drawn and a sample smear prepared and exposed to an acid buffer.