IgA serves primary function of protection from microbes.
Our body has five type of antibodies. Out of them, immunoglobulin A is most abundant. It is found in blood and different secretions of body.
It protects from infections by aiming at receptors of microbes and regulation of immune reaction and hence is first line of defence in the body.
The antibody is also responsible for maintaining homeostasis with microbiota present in different parts of body. Gut, oral and skin microbiota are highly common and significantly well studied than other microbiota.
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