Anti Bodies
Type A blood

can be used to donate to type AB individuals
can always be used to donate to an Rh+ individual
can be used to donate to type B individuals
contains type B antigens on the surface of red blood cells

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Anti Bodies
Each IgA antibody molecule consists of

two polypeptide chain and has one antigen binding site
three polypeptide chain and has two antigen binding site
four polypeptide chain and has two antigen binding site
two polypeptide chain and has two antigen binding site

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