1.

Pernicious anaemia is caused due to:(1) formation of autoantibodies against castle44.intrinsic factor(2) dietary deficiency of vitamin B,(3) deficiency of tyrosine(4) both (1) and (2)

Answer» <p>(4) </p><p>Explanation:The most common cause of pernicious anaemia is the loss of stomach cells that make intrinsic factor. Intrinsic factor helps the body absorb vitamin B12 in the intestine. </p>


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