| stoma | <botany> Pore in the epidermis of leaves and some stems, which permits gas exchange through the epidermis. Can be open or closed, depending upon the physiological state of the plant. Flanked by stomatal guard cells. (06 Mar 1998) |
|---|---|
| gingival contour | The shape or form of the gingiva, either natural or artificial, around the necks of the teeth. Synonym: gum contour. (05 Mar 2000) |
| gum contour | The shape or form of the gingiva, either natural or artificial, around the necks of the teeth. Synonym: gum contour. (05 Mar 2000) |
| contour | 1. The outline of a part; the surface configuration. 2. In dentistry, to restore the normal outlines of a broken or otherwise misshapen tooth, or to create the external shape or form of a prosthesis. Origin: L. Con-(intens.), + torno, to turn (in a lathe), fr. Tornus, a lathe (05 Mar 2000) |
| contour lines of Owen | Accentuated incremental line's in the dentin thought to be due to disturbances in the mineralization process. Synonym: contour lines of Owen. (05 Mar 2000) |
| height of contour | See: height of contour. (05 Mar 2000) |
| flange contour | The design of the flange of a denture. (05 Mar 2000) |
| acrosomal cap | A collapsed membranous vesicle that covers the anterior part of the nucleus of the spermatozoon, derived from the acrosomal granule; the carbohydrate-rich substance of the cap is associated with hydrolytic enzymes that aid in sperm penetration of the zona pellucida of the ovum. Synonym: head cap. (05 Mar 2000) |
| apical cap | <radiology> Local pleural thickening at lung apex, ascribed incorrectly to TB, aetiology: non-specific fibrous scarring (most common), Pancoast tumour (12 Dec 1998) |
| bishop's cap | <botany> A plant of the genus Mitella; miterwort. Source: Websters Dictionary (01 Mar 1998) |
| cap | <abbreviation> Catabolite (gene) activator protein. 1. Any anatomical structure that resembles a cap or cover. 2. A protective covering for an incomplete tooth. 3. Colloquialism for restoration of the coronal part of a natural tooth by means of an artificial crown. 4. The nucleotide structure found at the 5' terminus of many eukaryotic messenger RNAs, consisting of a 7-methylguanosine connected, via its 5'-hydroxyl group, by a triphosphate group to the 5'-hydroxyl group of the first nucleoside encoded by the DNA; usually symbolised as m7G5'ppp5'N, where N is nucleoside number 1 in the transcribed mRNA and is often itself methylated; the cap is added posttranscriptionally. (05 Mar 2000) |
| cap binding protein | <molecular biology, protein> Protein (24 kD) with affinity for cap structure at 5' end of mRNA that probably assists, together with other initiation factors, in binding the mRNA to the 40S ribosomal subunit. Translation of mRNA in vitro is faster if it has a cap binding protein. (18 Nov 1997) |
| cap II RNA(nucleoside-2'-)methyltransferase | <enzyme> Converts cap i-terminated mRNA to cap II-terminated mRNA Registry number: EC 2.1.1.- Synonym: cap II methylase (26 Jun 1999) |
| cap I RNA (nucleoside-2'-)methyltransferase | <enzyme> Converts cap 0-terminated mRNA to cap i-terminated mRNA Registry number: EC 2.1.1.- Synonym: cap I methylase (26 Jun 1999) |
| Cap(m(7)GpppXm) endonuclease | <enzyme> Cleaves capped rnas to generate primers that initiate viral RNA transcription Registry number: EC 3.1.27.- Synonym: cap mgx endonuclease, decapping enzyme (26 Jun 1999) |