Which of the following immunoglobulins shows homocytotropism –
Correct Answer: IgE
Description: IgE is an 8 S molecule. - resemble IgG structurally. - heat liable - an affinity for the surface of tissue cells paicularly mast cells of the same species. This feature is called homocytotropism. - the normal serum contains only traces of IgE ( a few nanograms per ml ) - greatly elevated levels in atopic conditions like asthma, hay fever. Reference : Anathanarayan & paniker's 9th edition, pg no: 98,98 <p>
Category:
Microbiology
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