This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': '”CACHECTIN” is produced by \nSelect and explain. \nA. macrophage, B. neutrophils, C. basophils, D. eosinophils', 'role': 'user'}, {'content': "Answer: A \nExplanation: Tumor necrosis factor (TNF, cachexin, or cachectin, and formerly known as tumor necrosis factor alpha or TNFα) is an adipokine involved in systemic inflammation and is a member of a group of cytokines that stimulate the acute phase reaction. It is produced chiefly by activated macrophages\nThe primary role of TNF is in the regulation of immune cells. TNF, being an endogenous pyrogen, is able to induce fever,apoptotic cell death, cachexia, inflammation and to inhibit tumorigenesis and viral replication and respond to sepsis via IL1& IL6 producing cells. Dysregulation of TNF production has been implicated in a variety of human diseases including Alzheimer's disease, cancer,\xa0major depression and inflammatory bowel disease (IBD)", 'role': 'assistant'}]