Anti Bodies
The immunoglobulin fold is

both (a) and (b)
a β-barrel composed of a three- and a four-stranded antiparallel β-sheet
found only in IgG molecules
found six times in the IgG molecule

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Anti Bodies
The main function of antibodies is to

chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease
kill all the foreign bodies
protect the circulatory system
generate antigens, thus conferring immunization

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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
IgE provides

secretions in the body
immunity against some parasites
complement killings of the cells and phagocytosis
All of these

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