This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Ferritin biosynthesis is regulated by serum level of ? \nSelect and explain. \nA. Ceruloplasmin, B. Hepcidin, C. Iron, D. Transferrin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is `c\' i.e., Iron"The level of iron in plasma is sensed by specific iron regulatory proteins which control the rate offerritin synthesis and to maintain homeostasis" - Human physiologyHepicidin regulates absorption of iron. But, it is also according to the serum iron level. If serum iron is deficiem, hepacidin level falls and there is increased iron absorption.', 'role': 'assistant'}]