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': 'Endogenous chemoattractants are all except - \nSelect and explain. \nA. C5a, B. Integrins, C. LTB4, D. IL 8', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Endogenous Chemoattractants include LTB4, complement system C5, chemokines, but not integrins. Integrins are cell matrix adhesion molecules. Integrins are proteins that function mechanically, by attaching the cell cytoskeleton to the extracellular matrix (ECM), and biochemically, by sensing whether adhesion has occurred. The integrin family of proteins consists of alpha and beta subtypes, which form transmembrane heterodimers. Basic Pathology, Robbins. Page no.:36', 'role': 'assistant'}]