Anti Bodies
Each IgA antibody molecule consists of

two polypeptide chain and has two antigen binding site
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

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Anti Bodies
Monoclonal refers to

the binding with same antigenic site with identical binding affinities
all the antibody molecules which are identical
All of these
a single clone of antibody-producing cells

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Anti Bodies
A polyclonal antibody response

is produced only in response to polymeric antigens
violates clonal selection
is produced by several B cells recognizing different pitopes on the same antigen
occurs during the lag phase of the immune response

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Anti Bodies
Type A blood

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

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