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: Physiology
[{'content': 'Intrinsic factor of castle is present in: \nSelect and explain. \nA. Chief cells, B. Fundus cells, C. Goblet cells, D. Parietal cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. Parietal cellsIntrinsic factor of castle which is also called as IF is secreted by Parietal cells in the antrum of stomach. Main stimulus is gastrin', 'role': 'assistant'}]