Final answer:
Leukotriene is a mast cell mediator that acts as a chemotaxis factor for neutrophils, attracting them to areas of infection or inflammation.
Step-by-step explanation:
An example of a mast cell mediator that acts as a chemotaxis factor for neutrophils is Leukotriene. Mast cells, when activated by an irritation or allergen, release various chemicals, one being leukotrienes. These leukotrienes are particularly effective at attracting neutrophils to the site of infection or inflammation through the process of chemotaxis. While histamine, also released by mast cells, is involved in the inflammatory response causing vasodilation and increased vascular permeability, it is not specifically a chemotaxis factor for neutrophils. Prostaglandins and interleukin-1 are other inflammatory mediators but are not the primary chemotactic factors for neutrophils secreted by mast cells.