neutrotaxis

A phenomenon in which neutrophilic leukocytes are stimulated by a substance in such a manner that they are either attracted, and move toward it (positive n.), or they are repelled, and move away from it (negative n.); in some instances, there is no effect (sometimes called indifferent n.). [neutrophil + G. taxis, arrangement]

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neu·tro·tax·is (noo″tro-takґsis) [neutrophil + -taxis] the attractive or repellent influence exerted by neutrophils.