This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
[{'content': 'Which of the following protein inhibits heme loss from plasma? \nSelect and explain. \nA. Ferritin, B. Hemopexin, C. Ceruloplasmin, D. Hemosiderin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hemopexin Binds to porphyrins, paicularly heme for heme recycling which prevent heme loss from plasmaFerritin is an intracellular protein that stores and releases iron Ferritin molecules in lysosomal membranes may aggregate in deposits that contain as much as 50% iron. These deposits are called hemosiderin. Ceruloplasmin- Transpo of copper', 'role': 'assistant'}]