This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Medicine
Mucosal transfer of iron in GIT is by: 
Select and explain. 
A. Transferrin, B. Apoferritin, C. Apotransferrin, D. Ferritin
B: Apoferritin
Answer: B: Apoferritin 
Explanation: Ans: bRef: Harrison, 16thed, p. 587, Fig. 90.1