This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Which of the following secretes histamine \nSelect and explain. \nA. Eosinophil, B. Basophil, C. Neutrophil, D. Monocyte', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Histamine is produced by many cell types, paicularly mast cells adjacent to vessels, as well as circulating basophils and platelets. ref robbins basicpathology 9th ed page 46', 'role': 'assistant'}]