Chemical substances that attract or repel cells. The concept denotes especially those factors released as a result of tissue injury, microbial invasion, or immunologic activity, that attract LEUKOCYTES; MACROPHAGES; or other cells to the site of infection or insult.

Cytotaxins liberated from normal or invading cells that specifically attract macrophages. They may be lymphokines, products of antigen, antibody and complement interactions or other.

Synonyms: Chemotaxins, Factor, Macrophage Chemotactic, Macrophage Chemotactic Factor, Cytotaxinogens, Chemotactic Factors, Chemotactic Factors, Macrophage, 0, Chemotaxin, Chemoattractant, Factor, Chemotactic, Chemotactic Factor, Cytotaxins, Chemotactic Factor, Macrophage, Macrophage Chemotactic Factors, Chemoattractants