| DIP | desquamative interstitial pneumonitis; diisopropyl phosphate; diisopropylamine; diphtheria; distal i... |
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| DIRLINE | Directory of Information Resources On-Line |
| DOCLINE | Documents On-Line |
| EURONET | European On-Line Network |
| EXELFS | extended electron-loss line fine structure |
| established cell line | <cell culture> A cell line is a permanently established cell culture that will proliferate indefinitely given appropriate fresh medium and space. Lines differ from cell strains in that they have escaped the Hayflick limit and become immortalised. Some species, particularly rodents, give rise to lines relatively easily, whereas other species do not. No cell lines have been produced from avian tissues and the establishment of cell lines from human tissue is difficult. Many cell biologists would consider that a cell line is by definition already abnormal and that it is on the way towards becoming the culture equivalent of a neoplastic cell. (26 Mar 1998) |
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| false Becke line | <microscopy> A second bright line which moves in the direction opposite to the Becke line. It is usually observed with thick particles or when the refractive index difference between particles and mountant is large. It appears as a concentration of reflected light at the high index side of the interface. (05 Aug 1998) |
| Ullmann's line | The line of displacement in spondylolisthesis. (05 Mar 2000) |
| Farre's line | A whitish line marking the insertion of the mesovarium at the hilum of the ovary. (05 Mar 2000) |
| Kilian's line | A transverse line marking the promontory of the pelvis. (05 Mar 2000) |
| Z line | <cell biology> The line formed where actin filaments attach between two sarcomeres. (11 May 1997) |
| Feiss line | A line running from the medial malleolus to the plantar aspect of the first metatarsophalangeal joint. (05 Mar 2000) |
| Lanz's line | A horizontal plane passing through the anterior superior iliac spines; it marks the boundary between the lateral and umbilical regions superiorly and the inguinal and pubic regions inferiorly. Synonym: planum interspinale, Lanz's line. (05 Mar 2000) |
| lateral line sense organ | A structure in fish consisting of a long groove or canal extending along each side of the trunk and tail and branching in the head region; the groove or tube is lined with neuroepithelial cells, some of which are in groups known as neuromasts; its function appears to be the detection of vibrations of low frequency. Synonym: neuromast organ. (05 Mar 2000) |
| lateral line system | A series of sense organs that detect pressure or vibrations along the head and side of cyclostomes, fishes, and some amphibians. (05 Mar 2000) |
| lead line | Deposits of lead sulfide in the gingiva in areas of chronic inflammation. (05 Mar 2000) |
| fulcrum line | An imaginary line around which a removable partial denture tends to rotate. Synonym: rotational axis. (05 Mar 2000) |
| Futcher's line | A dorso-ventral line of pigmentation occurring symmetrically and bilaterally for about 10 cm along the lateral edge of the biceps muscle, seen in some blacks. Synonym: Voigt's lines. (05 Mar 2000) |
| line | 1. The course followed by anything in motion; hence, a road or route; as, the arrow descended in a curved line; the place is remote from lines of travel. 2. <mathematics> That which has length, but not breadth or thickness. 3. <geography> A circle of latitude or of longitude, as represented on a map. The equator; usually called the line, or equinoctial line; as, to cross the line. 4. <genetics> A series or succession of ancestors or descand ants of a given person; a family or race; as, the ascending or descending line; the line of descent; the male line; a line of kings. "Of his lineage am I, and his offspring By very line, as of the stock real." (Chaucer) 5. <physics> Line of force, any line in a space in which forces are acting, so drawn that at every point of the line its tangent is the direction of the resultant of all the forces. It cuts at right angles every equipotential surface which it meets. Specifically, the outline of a horizontal section of a vessel, as when floating in the water. Origin: OE. Line, AS. Line cable, hawser, prob. From L. Linea a linen thread, string, line, fr. Linum flax, thread, linen, cable; but the English word was influenced by F. Ligne line, from the same L. Word linea. Source: Websters Dictionary (01 Mar 1998) |
| line angle | In dentistry, the junction of two surfaces of the crown of a tooth, or of a tooth cavity (cavity line angle). (05 Mar 2000) |