降钙素是由下列哪种细胞分泌： A: Parafollicular cell B: follicular epithelial cell C: chief cell D: acidophilic cell E: chromaffin cell
降钙素是由下列哪种细胞分泌： A: Parafollicular cell B: follicular epithelial cell C: chief cell D: acidophilic cell E: chromaffin cell
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