This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunity, Subject name: Pathology
[{'content': 'Primary mediators of anaphylaxis are all EXCEPT: \nSelect and explain. \nA. Histamine, B. Serotonin, C. Prostaglandins, D. TNF', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. d (TNF). (Ref. Robbin's pathology 7th ed. 63; Text book of Pathology by Harsh Mohan 5th ed. Chapter 5)MEDIATORS OF ANAPHYLAXIS# Histamine# Serotonin# Prostaglandins# VIP# Leukotrienes B4 and D4# TxA2# Prostaglandins (Pg D2 and E2)# Chemotactic factors for neutrophils and eosinophils", 'role': 'assistant'}]