This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pathology
[{'content': 'Heart failure cells are? \nSelect and explain. \nA. Neutrophills, B. Macrophages, C. Lymphocytes, D. Lymphocytes', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Macrophages o Heart failure cells are Hemosiderin laden alveolar macrophages.o Heart failure cells are a manifestation of pulmonary congestion and edema (as seen in heart failure)o Pulmonary edema & pulmonary infarction can be differentiated by the presence of heart failure cells in pulmonary edema.", 'role': 'assistant'}]