| van Helmont's mirror | An obsolete term for central tendon of diaphragm. (05 Mar 2000) |
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| van Horne, Johannes | <person> Dutch anatomist, 1621-1670. See: van Horne's canal. (05 Mar 2000) |
| van Horne's canal | <anatomy> The major efferent lymph duct into which lymph from most of the peripheral lymph nodes drains. Recirculating lymphocytes that have left the circulation in the lymph node return to the blood through the thoracic duct. (18 Nov 1997) |
| Van Slyke apparatus | An apparatus for determining the amounts of respiratory gases in the blood. (05 Mar 2000) |
| Van Slyke, Donald | <person> U.S. Biochemist, 1883-1971. See: slyke, Van Slyke apparatus, Van Slyke's formula. (05 Mar 2000) |
| Van Slyke's formula | The value obtained when the square root of the urine flow (when below 2 ml/min) is multiplied by the urine urea concentration and divided by the whole blood urea concentration; represents an old empirical adjustment for the effect of low urine flow on urea excretion; sometimes corrected for body size by dividing by some function of body weight or surface area. Later, plasma concentration was substituted for blood concentration in the calculation. The normal value is about 54 ml/min per 1.73 m2 in an adult person. Synonym: Van Slyke's formula. (05 Mar 2000) |
| ellis-van creveld syndrome | <radiology> Chondro-ectodermal dysplasia, hereditary (especially seen in Amish of Pennsylvania), polydactyly (100%), congenital heart disease (60%), abnormalities of cutaneous appendages (skin, hair, nails) More info: Ellis-van Creveld syndrome (12 Dec 1998) |
| exon trapping vincent van buren | <molecular biology, technique> A technique used to identify vector. The vector has two exons that are normal, splicedtogether in a transcript.Fragments of DNA can be inserted into the intron, and when the insert is an exon, the exon is splicedinto the transcript, thereby giving a longer transcript that can be detected by Northern blotanalysis. (09 Oct 1997) |
| Lobry de Bruyn-van Ekenstein transformation | The conversion of glucose to fructose and mannose in dilute alkali by enolization adjacent to the carbonyl group to form an enediol, a reaction analogous to certain biochemical transformations. (05 Mar 2000) |