This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Endogenous chemoattractant is 
Select and explain. 
A. C5a, B. Bacterial products, C. Lipopolysaccharide A, D. C8
A: C5a
Answer: A: C5a 
Explanation: Ref Robbins 8/e p66;7/e p56;9/e p77 C5a is a strong chemoattractant and is involved in the recruitment of inflammatory cells such as neutrophils, eosinophils, monocytes, and T lymphocytes, in activation of phagocytic cells and release of granule-based enzymes and generation of oxidants, all of which may contribute to innate immune functions or tissue ...