| leukocytosis-promoting factor | A substance obtained by Menkin from inflammatory exudates; it stimulates leukocytosis. (05 Mar 2000) |
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| leukocytotactic | Pertaining to, characterised by, or causing leukocytotaxia. Synonym: leukocytactic, leukotactic. (05 Mar 2000) |
| leukocytotaxia | 1. The active ameboid movement of leukocytes, especially the neutrophilic granulocytes, either toward (positive leukocytotaxia) or away from (negative leukocytotaxia) certain microorganisms as well as various substances frequently formed in inflamed tissue. 2. The property of attracting or repelling leukocytes. Synonym: leukocytaxia, leukocytaxis, leukotaxia, leukotaxis. Origin: Leukocyte + G. Taxis, arrangement (05 Mar 2000) |
| leukocytotoxin | Any substance that causes degeneration and necrosis of leukocytes, including leukolysin and leukocidin. Synonym: leukotoxin. Origin: Leukocyte + G. Toxikon, poison (05 Mar 2000) |
| Leukocytozoon | A genus of sporozoan parasites (family Plasmodiidae, suborder Haemosporina) that attack the immature red blood cells of birds and are capable of causing acute outbreaks of disease, particularly in turkeys and ducks; vectors are black flies, Simulium species, and the bloodsucking gnat Culicoides. Synonym: Leukocytozoon. Origin: G. Leukos, white, + kytos, cell, + zoon, animal (05 Mar 2000) |
| leukocytozoonosis | Infection of ducks, turkeys, chickens, pigeons, and doves with species of the protozoan genus Leucocytozoon. The disease is most acute and damaging in young turkeys and ducks, and is characterised by enlargement of the spleen and liver, anaemia, listlessness, weakness, and frequently death. Synonym: leukocytozoonosis. (05 Mar 2000) |