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Which of the following gastric cells indirectly help in erythropoiesis?
Explanation
Parietal cells supply HCl (iron absorption) and intrinsic factor ($B_{12}$ absorption).
Detailed Solution
The parietal or oxyntic cell is a source of HCl and intrinsic factor.
HCl converts iron present in the diet from ferric to ferrous form so that it can be absorbed easily and used during erythropoiesis.
Intrinsic factor is essential for the absorption of vitamin $B_{12}$ and its deficiency causes pernicious anaemia.