title: Mechanisms of sensing chemical gradients by polymorphonuclear leukocytes.
mesh_terms: D000818:Animals; D002633:Chemotaxis; D006736:Horses; D007962:Leukocytes / Q000502:physiology*; D008954:Models, Biological; D009040:Motion Pictures; D009504:Neutrophils / Q000502:physiology; D011554:Pseudopodia / Q000502:physiology