This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basic Concepts and Vascular changes of Acute Inflammation, Subject name: Pathology
[{'content': 'Which of the following is not an inflammatory mediator? \nSelect and explain. \nA. Tumor necrosis factor, B. Integrin, C. Interleukin, D. Interferons', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Mediators Histamine Serotonin 1deg& 2deg Lysosomal granules Nitric Oxide (NO) Arachidonic Acid metabolites Cytokines & Interleukins Platelet Activation factors TNF', 'role': 'assistant'}]