| haematotympanum | <otolaryngology> A collection of blood in the middle ear space. May occur secondary to severe barotitis media, basal skull fracture or ear trauma. (27 Sep 1997) |
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| haematoxin | <microbiology> A haemotoxin is a type of toxin which attacks blood cells. (09 Oct 1997) |
| haematoxylin | <chemical> Basophilic stain that gives a blue colour (to the nucleus of a cell for example), commonly used in conjunction with eosin that stains the cytoplasm pink or red. Various modifications of haematoxylin have been developed. The histopathologist's H&E is haematoxylin and eosin. (18 Nov 1997) |
| haematoxylin and eosin stain | <technique> Probably the most generally useful of all staining methods for tissues; nuclei are stained a deep blue-black with haematoxylin, and cytoplasm is stained pink after counterstaining with eosin, usually in water. (05 Mar 2000) |
| haematoxylin bodies | Poorly defined, homogeneous basophilic remnants of whole nuclei, an occasional finding in the fixed tissues of patients with systemic lupus erythematosus, but observed more frequently in the renal glomeruli and the walls of blood vessels, and probably related to the LE phenomenon; so named because of their affinity for haematoxylin stain. (05 Mar 2000) |
| haematoxylin-malachite green-basic fuchsin stain | <technique> A stain for epoxy resin-extracted sections; semi-thick sections have their plastic dissolved out and the residual tissue is stained sequentially with the various dyes; nuclei and astrocytes are purplish-pink and myelin, lipid droplets, nucleoli, and oligodendrocytes are bright blue-green. (05 Mar 2000) |
| haematoxylin-phloxine B stain | <technique> A stain for intact epoxy sections; semi-thick sections of plastic-embedded tissues have the following structures stained blue to black; chromatin, nucleoli, basophilic cytoplasm, mitochondria, plasma and nuclear membranes, anisotropic myofibrils, mast cell granules, and elastic membranes of blood vessels; appearing pink to red are collagen fibrils, reticulum, goblet cell mucins, hyalin cartilage matrix, stereocilia, cytoplasm, and erythrocytes; fat droplets and perichondrocyte matrix are green. (05 Mar 2000) |
| haematoxylon | <botany> A genus of leguminous plants containing but a single species, the H. Campechianum or logwood tree, native in Yucatan. Origin: NL, fr. Gr. Blood + wood. Source: Websters Dictionary (01 Mar 1998) |
| haematozoic | Parasitic in the blood of vertebrates; denoting certain protozoa. Synonym: haematozoic. (05 Mar 2000) |
| haematozoon | Origin: NL, fr. Gr, blood + animal. <zoology> A parasite inhabiting the blood; especially., Certain species of nematodes of the genus Filaria, sometimes found in the blood of man, the horse, the dog, etc. The trematode, Bilharzia haematobia, which infests the inhabitants of Egypt and other parts of Africa, often causing death. Source: Websters Dictionary (01 Mar 1998) |
| haematuria | <clinical sign, urology> The finding of blood in the urine. Origin: Gr. Ouron = urine (18 Nov 1997) |
| haematuric bilious fever | Haematuria due to renal lesions caused by the malarial haematozoon, Plasmodium falciparum. (05 Mar 2000) |
| haemic | Pertaining to the blood; haemal. Source: Websters Dictionary (01 Mar 1998) |
| Haemichorda | A phylum comprised of soft-bodied, bilaterally symmetrical wormlike marine animals with gill-slits to the pharynx and a conical proboscis; a ciliated larval stage resembles that of echinoderms. Synonym: Haemichorda. Origin: hemi-+ Mod. L. Chordata, having a notochord, fr. G. Chorde, string (05 Mar 2000) |
| Haemichordata | A phylum comprised of soft-bodied, bilaterally symmetrical wormlike marine animals with gill-slits to the pharynx and a conical proboscis; a ciliated larval stage resembles that of echinoderms. Synonym: Haemichorda. Origin: hemi-+ Mod. L. Chordata, having a notochord, fr. G. Chorde, string (05 Mar 2000) |