The phrase "other inflammatory chemicals" refers to substances that are produced during an immune response and contribute to inflammation. Full definition
These mast cells produce histamines, prostaglandins, and other inflammatory chemicals in response to allergens. (dog-health-guide.org)
Mast cells, which reside in the skin and other tissues, release histamine and other inflammatory chemicals into the bloodstream and surrounding tissue in response to certain stimuli, a process known as degranulation. (sciencedaily.com)
In the process they induce inflammation; the cells also secrete other inflammatory chemicals, like interleukin - 6 and tumor necrosis factor - alpha, which are known to adhere to the endothelium of the blood vessels, an early event in atherosclerosis. (discovermagazine.com)