noun
or leu·co·tax·ine ˌlükəˈtakˌsēn, -_sə̇n
( -s )
Etymology: leuc- + Greek taxis arrangement, order (from tassein, tattein to arrange) + English -ine — more at tactics
: a crystalline polypeptide that is obtained from the fluid at sites of inflammation in the body and that increases the permeability of capillaries and migration of leukocytes