| orthodontic space closure | Therapeutic closure of spaces caused by the extraction of teeth, the congenital absence of teeth, or the excessive space between teeth. (12 Dec 1998) |
|---|---|
| eye-closure pupil reaction | A constriction of both pupils when an effort is made to close eyelids forcibly held apart. A variant of the pupil response to near vision. Synonym: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillary reflex, Westphal-Piltz phenomenon. (05 Mar 2000) |
| eye-closure reflex | General term for reflex closure of eyelids caused by any stimulus. Synonym: eye-closure reflex. (05 Mar 2000) |
| flask closure | In dentistry, the procedure of bringing the two halves or parts of a flask together; trial flask closure's are preliminary closure's made to eliminate excess denture-base material and to ensure that the mold is completely filled; the final flask closure is the last closure of a flask before curing, following trial packing of the mold with denture-base material. (05 Mar 2000) |
| layered closure | <surgery> A sutural closure where the subcutaneous tissue is closed separately using an absorbable suture and the skin is closed in an additional layer. (27 Sep 1997) |
| lid-closure reaction | A constriction of both pupils when an effort is made to close eyelids forcibly held apart. A variant of the pupil response to near vision. Synonym: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillary reflex, Westphal-Piltz phenomenon. (05 Mar 2000) |
| artery of the pancreatic tail | Origin, splenic artery near the left gastroepiploic; distribution, the tail of the pancreas; anastomoses, with other pancreatic arteries. Synonym: arteria caudae pancreatis, caudal pancreatic artery. (05 Mar 2000) |
| boat-tail | <zoology> A large grackle or blackbird (Quiscalus major), found in the Southern United States. Source: Websters Dictionary (01 Mar 1998) |
| rat-tail | 1. <veterinary> An excrescence growing from the pastern to the middle of the shank of a horse. 2. <zoology> The California chimaera. See Chimaera. Any fish of the genus Macrurus. See Grenadier. Source: Websters Dictionary (01 Mar 1998) |
| mare's-tail | 1. A long streaky cloud, spreading out like a horse's tail, and believed to indicate rain; a cirrus cloud. See Cloud. "Mackerel sky and mare's-tails Make tall ships carry low sails." (Old Rhyme) 2. <botany> An aquatic plant of the genus Hippuris (H.vulgaris), having narrow leaves in whorls. Source: Websters Dictionary (01 Mar 1998) |
| viral tail proteins | Proteins found in the tail sections of DNA and RNA viruses. It is believed that these proteins play a role in directing chain folding and assembly of polypeptide chains. (12 Dec 1998) |
| comet tail sign | In chest radiology, the curved appearance of pulmonary arteries and veins associated with round atelectasis, fibrosis associated with organizing pleurisy. Synonym: comet tail sign. (05 Mar 2000) |
| poly A tail | <molecular biology> A sequence of adenine nucleotides that get added to the 3' end of some primary transcript messenger RNA molecules in eukaryotes during post-transcriptional processing. The added tail is believed to confer stability to the molecule. Histone mRNA do not have poly A tail. The poly A tail is added post transcriptionally to the primary transcript as part of the nuclear processing of RNA yielding hnRNAs with 60-200 adenylate residues in the tail. In the cytoplasm the poly A tail on mRNAs is gradually reduced in length. The function of the poly A tail is not clear but it is the basis of a useful technique for the isolation of eukaryotic mRNAs. The technique uses an affinity column with oligo(u) or oligo(dT) immobilised on a solid support. If cytoplasmic RNA is applied to such a column, poly A rich RNA (mRNA) will be retained. (13 Nov 1997) |
| hare's-tail | <botany> A kind of grass (Eriophorum vaginatum). See Cotton grass, under Cotton. Hare's-tail grass, a species of grass (Lagurus ovatus) whose head resembles a hare's tail. Source: Websters Dictionary (01 Mar 1998) |
| sperm tail | The posterior, filiform part of spermatozoa, which provides sperm motility. (12 Dec 1998) |