<prompt> Chemoattractants among the following are?HistamineLeukotriene B4 and C5aLeukotriene C4 and C3aBradykinin  <response>: Ans. is b i.e., Leukotriene B4 and C5a o Chemoattractant:- C5a most potent, IL-8, LTB4, PAF, bacterial products, Lymphokine, Kallikrein.o C5a is the most potent chemoattractant 