Mindblown: a blog about philosophy.

  • Histoid

    Histoid

    Made of or developed from a particular tissue. Like standard tissue.  

  • Histocompatible

    Referring to tissues from two individuals which have compatible antigens.  

  • Histocompatibility

    Compatibility between the antigens of tissues from two individuals, important in transplants. Ability of the cells of one tissue to survive in the presence of cells of another tissue, as in the ability of cells of a transplanted organ to survive in the presence of cells of another organism. A high degree of histocompatibility is…

  • Histochemistry

    The study of the chemical constituents of cells and tissues and also their function and distribution, using a light or electron microscope to evaluate the stains. Study of cells and tissues using both microscopic and chemical staining techniques. The study of the identification and distribution of chemical compounds within and between cells, by means of…

  • Histiocytosis

    A condition in which histiocytes are present in the blood. Any of a group of diseases in which there are abnormalities in certain large phagocytic cells (histiocytes), leading to biochemical defects, such as abnormal storage of fats (as in ‘Gaucher’s disease), and other poorly understood conditions, such as Letterer-Siwe disease and Hand-Schuller-Christian disease. An abnormal…

  • Histiocytoma

    A tumour containing histiocytes. A tumor that contains macrophages or histiocytes, large cells with the ability to engulf foreign matter and bacteria.  

  • Histaminic

    Referring to histamines.  

  • Histamine test

    A test to determine the acidity of gastric juice. A diagnostic test to determine the maximal production of gastric acidity following the administration of an antihistamine subcutaneously while gastric contents are removed by a nasogastric tube for laboratory analysis. Injection of histamine subcutaneously to stimulate gastric secretion of hydrochloric acid.  

  • Histamine receptor

    A cell which is stimulated by histamine. H1 receptors in blood vessels are involved in allergic reactions, H2 receptors in the stomach are involved in gastric acid secretion.  

  • Hirudin

    An anticoagulant substance produced by leeches, which is injected into the bloodstream while the leech is feeding on a body. An anticoagulant, present in the salivary glands of leeches and in certain snake venoms, that prevents blood coagulation by inhibiting the action of. the enzyme thrombin. A substance present in the secretion of the buccal…

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