| calcium-independent processing protease | <enzyme> Converts hiv-1 gp160 precursor to gp120 and gp41 Registry number: EC 3.4.- Synonym: viral envelope glycoprotein maturase, vem enzyme (26 Jun 1999) |
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| calcium-transporting atpase | <enzyme> An enzyme found in the sarcoplasmic reticulum vesicle membrane. During the relaxation of skeletal muscles and muscle rich in mitochondria, this enzyme catalyses the active transport of calcium into the sarcoplasmic reticulum vesicles from the sarcoplasm. It requires micromolar concentrations of calcium and utilises mgatp as a substrate. Chemical name: ATP phosphohydrolase (Calcium-transporting) Registry number: EC 3.6.1.38 (12 Dec 1998) |
| calciuria | The presence of calcium in the urine. Origin: Gr. Ouron = urine (18 Nov 1997) |
| calcivirus | <virology> Genus of Picornaviridae. (18 Nov 1997) |
| calcodynia | Synonym: painful heel. Origin: L. Calx, heel, + G. Odyne, pain (05 Mar 2000) |
| calcophorous | Synonym: calciferous. Origin: L. Calx, lime, + G. Phoros, bearing (05 Mar 2000) |
| calcospherite | A tiny, spheroidal, concentrically laminated body containing accretive deposits of calcium salts; found most frequently in papillary carcinoma of the thyroid and ovary, and in meningioma, probably as the result of degenerative changes in the fibrovascular stroma. Synonym: psammoma bodies. Origin: L. Calx, lime, + G. Sphaira, sphere (05 Mar 2000) |
| calcspar | <microscopy> A doubly refracting mineral used in the manufacture of polarizing prisms. It is uniaxial negative and in the trigonal diversion of the hexagonal system of crystals. Its indexes are epsilon =1.486, omega =1.658, its hardness is 3 on the Mohr scale and specific gravity 2.711. See: balsam, Canada. (05 Aug 1998) |
| calculated mean organism | A hypothetical organism whose characters are the means of both the positive and negative characters of the organism's which belong to the same taxon as the CMO, as opposed to the hypothetical mean. Organism. (05 Mar 2000) |
| calculi | An abnormal concretion occurring within the animal body and usually composed of mineral salts. (12 Dec 1998) |
| calculosis | The tendency or disposition to form calculi or stones. Origin: L. Calculus, small stone, + G. -osis, condition (05 Mar 2000) |
| calculus | A calcium salt concretion which forms on your teeth. Calculus deposits form on the teeth in areas which you do not floss or brush. If these concretions are left to build up on the tooth enamel, they will irritate the gum tissue, push it away from the tooth and promote progressive bone loss. Eventually the teeth can loosen and fall out. These deposits can be removed by a dentist or a dental hygienist on an annual to biannual basis. (renal) A solid concretion or stone which forms within the urinary tract (kidney). (27 Sep 1997) |
| calculus I | An abnormal concretion occurring within the animal body and usually composed of mineral salts. (18 Nov 1997) |
| calculus II | <dentistry> A hard, yellowish to brownish black deposit or teeth formed largely through the mineralisation of dead bacteria in dental plaques by the calcium salts in salivary secretions and subgingival transudates. Synonym: tartar. (18 Nov 1997) |
| Calculus Surface Index | An index that measures only dental calculus, used for evaluating new calculus formation within a large group of test subjects. (05 Mar 2000) |