| catenate | <molecular biology> Two or more circular DNA molecules where one or more circles run through the enclosed space of another like links in a chain. (16 Mar 1998) |
|---|---|
| catenating | Occurring in a chain or series. Origin: L. Catenatus, chained (05 Mar 2000) |
| catenation | <chemistry> The spontaneous linking of certain chemical elements to each other, such as carbon to make rings or chains. The linking of multiple copies of a macromolecule to each other. (16 Mar 1998) |
| catenins | <protein> Proteins associated with the cytoplasmic domain of uvomorulin and presumably involved in linking to the cytoskeleton. (alpha catenin 102 kD, beta catenin 88 kD, gamma catenin 80 kD) (16 Mar 1998) |
| catenoid | 1. Like a chain, such as a chain of fungus spores or a colony of protozoa in which the individuals are joined end to end. Synonym: catenulate. 2. Surface of net zero curvature generated by the rotation of a catenary (curve of repose of a suspended chain); the interventricular septum of the heart in idiopathic hypertrophic subaortic stenosis resembles a catenoid, which makes it ineffective in increasing intracavity pressure or in reducing its volume as defined in Laplace's law. Origin: L. Catena, chain, + G. Eidos, resemblance (05 Mar 2000) |
| catenulate | 1. Like a chain, such as a chain of fungus spores or a colony of protozoa in which the individuals are joined end to end. Synonym: catenulate. 2. Surface of net zero curvature generated by the rotation of a catenary (curve of repose of a suspended chain); the interventricular septum of the heart in idiopathic hypertrophic subaortic stenosis resembles a catenoid, which makes it ineffective in increasing intracavity pressure or in reducing its volume as defined in Laplace's law. Origin: L. Catena, chain, + G. Eidos, resemblance (05 Mar 2000) |
| caterpillar cell | A large mononuclear cell found in connective tissue of the heart wall in inflammatory conditions, especially in the Aschoff body. The ovoid nucleus contains a central chromatin mass appearing as a wavy bar in longitudinal section. Synonym: Anitschkow cell, Anitschkow myocyte, caterpillar cell. (05 Mar 2000) |
| caterpillar dermatitis | Allergic contact dermatitis caused by the larva of the browntail moth, puss caterpillar, gypsy moths and other caterpillars. Synonym: caterpillar rash. (05 Mar 2000) |
| caterpillar flap | A tubed flap transferred end-over-end (in stages) from the donor area to a distant recipient area. Synonym: waltzed flap. (05 Mar 2000) |
| caterpillar rash | Allergic contact dermatitis caused by the larva of the browntail moth, puss caterpillar, gypsy moths and other caterpillars. Synonym: caterpillar rash. (05 Mar 2000) |
| caterpillar-hair ophthalmia | The presence of nodular swellings on the conjunctiva, due to penetration of ocular tissues by the hairs of caterpillars. Synonym: caterpillar-hair ophthalmia. (05 Mar 2000) |
| catfish | Common name to express the order siluriformes. This order contains many families and over 2,000 species, including venomous species. Heteropneustes and plotosus genera have dangerous stings and are aggressive. most species are passive stingers. (12 Dec 1998) |
| catgut | Sterile collagen strands obtained from healthy mammals. They are used as absorbable surgical ligatures and are frequently impregnated with chromium or silver for increased strength. They tend to cause tissue reaction. (12 Dec 1998) |
| Catha edulis | A plant of Ethiopia and Arabia (family Celastraceae), cultivated for use as a stimulant; khat (the fresh leaves and twigs) is chewed or used in the preparation of a beverage; the active principle is pharmacologically related to the amphetamines, probably d-norisoephedrine. Origin: Ar. Khat (05 Mar 2000) |
| Catharanthus alkaloids | <chemical> A class of alkaloids from the genus of apocyanaceous woody herbs including periwinkles. They are some of the most useful antineoplastic agent. Pharmacological action: antineoplastic agent, phytogenic, vasodilator agents. (12 Dec 1998) |