| histoid neoplasm | Old term for a neoplasm characterised by a cytohistologic pattern that closely resembles the tissue from which the neoplastic cells are derived. (05 Mar 2000) |
|---|---|
| histoid tumour | Old term for a tumour composed of a single type of differentiated tissue. (05 Mar 2000) |
| histoincompatibility | <immunology> The rejection of tissue grafts by the host's immune system because the donor of the tissue has histocompatibility antigens that are too genetically dissimilar to the host's antigens. The chances of histoincompatibility increase the more dissimilar the host and donor are from each other. (09 Oct 1997) |
| histologic | Pertaining to histology. (18 Nov 1997) |
| histologic accommodation | The change in shape of cells to meet altered physical conditions, as the flattening of cuboidal cells in cysts as a result of pressure. Synonym: pseudometaplasia. (05 Mar 2000) |
| histological | Pertaining to histology. (18 Nov 1997) |
| histologist | One versed in histology. Source: Websters Dictionary (01 Mar 1998) |
| histology | <study> The study of cells and tissue on the microscopic level. (27 Sep 1997) |
| histolysis | <biology> The decay and dissolution of the organic tissues and of the blood. Origin: NL, fr. Gr. "istos tissue + to loosen, dissolve. Source: Websters Dictionary (01 Mar 1998) |
| histolytic | <biology> Of or pertaining to histolysis, or the degeneration of tissues. Source: Websters Dictionary (01 Mar 1998) |
| histoma | <oncology, tumour> A histoma is any tumour which was derived from mature tissue. (09 Oct 1997) |
| histometaplastic | Exciting tissue metaplasia. (05 Mar 2000) |
| Histomonas meleagridis | A protozoan flagellate (order Trichomonadida) parasitizing the intestine and liver of turkeys, chickens, and many other domestic and wild gallinaceous birds; it is nearly ubiquitous but rarely pathogenic in chickens; in the turkey, it causes histomoniasis. It is now considered to be in a family (Monocercomonadidae) that includes Dientamoeba. Synonym: Amoeba meleagridis. (05 Mar 2000) |
| histomoniasis | A disease chiefly affecting turkeys, caused by Histomonas meleagridis and characterised by ulcerative and necrotic lesions of the liver and caecum, acute onset, and a high mortality rate. It is transmitted inside the eggs of the nematode Heterakis gallinae, which is primarily responsible for maintaining and spreading the infection. Synonym: blackhead, infectious enterohepatitis. (05 Mar 2000) |
| histomorphometry | The quantitative measurement and characterization of microscopical images using a computer; manual or automated digital image analysis typically involves measurements and comparisons of selected geometric areas, perimeters, length angle of orientation, form factors, centre of gravity coordinates, as well as image enhancement. Origin: histo-+ G. Morphe, shape, + metron, measure (05 Mar 2000) |