oa Professional Nursing Today - Immunity and the digestive tract in infants : PNT paediatrics section



The intestine is the largest organ in the immune system of the body, and as such is the location for the majority of lymphocytes and other immune effector cells. The intestine is exposed to vast quantities of dietary and microbial foreign bodies (pathogens), which, in some instances, are potentially lethal. The development of normal immune function of the intestine is therefore vital for survival, and is dependent on appropriate antigen exposure and processing, and an intact intestinal barrier.


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