<prompt> Most impoant mediator of chemotaxis isC3bC5aC5_7C2  <response>: ref Robbins 7e p56 ,9e 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 ... 