| lineolate | 1. <zoology> Marked with little lines. 2. <botany> Marked longitudinally with fine lines. Origin: L. Lineola, dim. Of linea line. Source: Websters Dictionary (01 Mar 1998) |
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| liner | <botany> A plant seedling grown in a long narrow tube (typically 10 inches tall and 1.5 inches in diameter) for convenient transplanting onto a revegetation site. (04 Mar 1998) |
| LINES | <abbreviation> Long interspersed elements. (05 Mar 2000) |
| lines of Retzius | Incremental line's of rhythmic deposition of successive layers of enamel matrix during development. Synonym: lines of Retzius. (05 Mar 2000) |
| lines of Zahn | Riblike markings seen by the naked eye on the surface of antemortem thrombi; they consist of a branching framework of platelets and fibrin separating the coagulated blood cells. Synonym: striae of Zahn. (05 Mar 2000) |
| Lineweaver Burke plot | A plot of 1/v against 1/S for an enzyme catalysed reaction, where v is the initial rate and s the substrate concentration. From the equation: 1/v = 1/Vmax(1+Km/S) the parameters Vmax and Km can be determined. The equation overweights the contribution of the least accurate points and other methods of analysis are preferred. See: Eadie Hofstee plot. (18 Nov 1997) |
| Lineweaver, Hans | <person> U.S. Physical chemist, *1907. See: Lineweaver-Burk equation, Lineweaver-Burk plot. (05 Mar 2000) |
| Lineweaver-Burk equation | A rearrangement of the Michaelis-Menten equation, 1/v = 1/Vmax + (Km/Vmax)(1/[S]). Compare: double-reciprocal plot. (05 Mar 2000) |
| Lineweaver-Burk plot | <statistics> A graph made to analyse how fast an enzyme can convert its substrate into its product, depending on how much substrate is present (its concentration) and to determine its maximum speed (after which the enzyme does not get any faster no matter how high the concentration of substrate gets), called Vmax. It is a plot of 1/v versus 1/[S], where v=rate of product formation and [S]=the concentration of the substrate. Synonym: Lineweaver-Burk plot, Woolf-Lineweaver-Burk plot. (05 Mar 2000) |
| posterior median line | The line of intersection of the midsagittal plane with the posterior surface of the body. Synonym: linea mediana posterior. (05 Mar 2000) |
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| Poupart's line | A vertical line passing through the centre of the inguinal ligament on either side; it marks off the hypochondriac, lumbar, and iliac from the epigastric, umbilical, and hypogastric regions, respectively. (05 Mar 2000) |
| preaxillary line | A vertical line extending inferiorly from the anterior axillary fold. Synonym: linea axillaris anterior, linea preaxillaris, preaxillary line. (05 Mar 2000) |
| Haller's line | A thickened band of pia mater along the midline of the anterior surface of the spinal cord. Synonym: Haller's line. (05 Mar 2000) |
| Hampton line | A thin radiolucent band across the neck of a contrast-filled benign gastric ulcer, indicating mucosal oedema. Compare: Carman's sign. (05 Mar 2000) |
| saemicircular line | A crescentic line, not always clearly defined, which marks the lower limit of the posterior layer of the sheath of the rectus abdominis muscle. Synonym: linea arcuata vaginae musculi recti abdominis, Douglas' line, linea saemicircularis, saemicircular line. (05 Mar 2000) |
| saemicircular line of Douglas | A crescent-shaped line that defines the end of the posterior fascial sheath of the rectus abdominis muscle. (05 Mar 2000) |
| sagittal line | Any line parallel to the midline, indicating a sagittal plane. (05 Mar 2000) |
| product line management | Management control systems for structuring health care delivery strategies around case types, as in drgs, or specific clinical services. (12 Dec 1998) |
| Hensen's line | <cell biology> The H band is an area within muscle tissue which is light when stained and consists only of myosin fibres (and no actin fibres). The H band is at the centre of each muscle sarcomere. (09 Oct 1997) |
| S-BP line | A line connecting the sella with the Bolton point; it indicates the posterior portion of the cranial base in cephalometrics. (05 Mar 2000) |
| scapular line | A vertical line passing through the inferior angle of the scapula. Synonym: linea scapularis. (05 Mar 2000) |
| hickman line | <equipment> A narrow plastic tube which is inserted, under anaesthetic, into a major blood vessel in the chest. It is used for patients undergoing intensive therapy and provides a route for taking blood samples and administering drugs without repeated needle puncture of a vein. (13 Nov 1997) |
| highest nuchal line | A line above and parallel to the superior nuchal line on the external surface of the occipital bone; it gives attachment to the epicranial aponeurosis and occipitalis muscle. Synonym: linea nuchae suprema. (05 Mar 2000) |
| high lip line | The greatest height to which the lip is raised in normal function or during the act of smiling broadly. (05 Mar 2000) |