| haemoagglutination | <haematology> Agglutination of red blood cells, often used to test for the presence of antibodies directed against red cell surface antigens or carbohydrate binding proteins or viruses in a solution. Requires that the agglutinin has at least two binding sites. (18 Nov 1997) |
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| haemoagglutinin | <haematology> Substance that will bring about the agglutination of erythrocytes. (18 Nov 1997) |
| haemoantitoxin | An antibody that neutralises the effects of a haemotoxin, such as the haemolytic material in cobra venom. (05 Mar 2000) |
| Haemobartonella | A genus of parasitic bacteria (order Rickettsiales) found in and on the surface of erythrocytes, but which rarely produce disease in animals without splenectomy. They are identical to Eperythrozoon species, except that Haemobartonella species are not found free in the plasma nor are ring forms seen on the surface of infected erythrocytes. Species are found in laboratory rats and in dogs, cats, and other domestic animals. The type species is Haemobartonella muris. Synonym: Haemobartonella. Origin: G. Haima, blood, + dim. Of A.S. Beretun, courtyard, grange, fr. Bere, barley, + tun, enclosure (05 Mar 2000) |
| Haemobartonella felis | The species causing feline infectious anaemia. (05 Mar 2000) |
| Haemobartonella muris | A species found in rats, mice, and hamsters; ectoparasites such as the rat louse, the flea, and possibly the bedbug are vectors; it is the type species of Haemobartonella. (05 Mar 2000) |
| haemobartonellosis | An acute or chronic anaemia of domestic cats caused by the rickettsia Haemobartonella felis. Synonym: haemobartonellosis. (05 Mar 2000) |
| haemobilia | Haemorrhage in or through the biliary tract. The blood may drain into the intestine or form clots within the biliary tract. The causes include trauma, inflammation, cholelithiasis, vascular disease, or neoplasms. (12 Dec 1998) |
| haemoblast | A blood cell derived from embryonic mesenchyme, characterised by basophilic cytoplasm and a relatively large nucleus with a spongy, loose network of chromatin and several nucleoli; mitochondria are extremely fine and delicate. Haemocytoblasts represent the primitive stem cells of the monophyletic theory of the origin of blood and have the potentiality of developing into erythroblasts, young forms of the granulocytic series, megakaryocytes, etc. Synonym: haematocytoblast, haemoblast. Origin: haemo-+ G. Kytos, cell, + blastos, germ (05 Mar 2000) |
| haemoblastosis | A proliferative condition of the haematopoietic tissues in general. (05 Mar 2000) |
| haemocatharsis | Cleansing the blood. Origin: haemo-+ G. Katharsis, a cleansing (05 Mar 2000) |
| haemocatheresis | Destruction of the blood cells, especially of erythrocytes (haemocytocatheresis). Origin: haemo-+ G. Kathairesis, destruction (05 Mar 2000) |
| haemocatheretic | Pertaining to or characterised by haemocatheresis. (05 Mar 2000) |
| haemoccult test | A qualitative test for occult blood in stool based upon detecting the peroxidase activity of haemoglobin; a test kit can be used at home and the specimen mailed to a laboratory for evaluation. (05 Mar 2000) |
| haemocele | The system of blood-containing spaces pervading the body in arthropods. Origin: haemo-+ G. Koiloma, cavity (05 Mar 2000) |