| unit membrane | <cell biology> The three ply, approximately 7nm wide membrane structure found in all cells, composed of a fluid lipid bilayer with intercalated proteins. The unit membrane theory carries with it the presumption that all biological membranes have basically the same structure. (18 Nov 1997) |
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| unit of convergence | See: meter angle. (05 Mar 2000) |
| unit of energy | CGS system: erg, joule, MKS system: newton-meter (joule), FPS system: foot-poundal,gravitational unit: gram-centimeter, gram-meter, kilogram-meter, foot-pound,SI: joule. (05 Mar 2000) |
| unit of force | CGS system: dyne, FPS system: poundal, MKS system: newton,SI: newton. (05 Mar 2000) |
| unit of heat | Calorie (gram calorie; kilocalorie) Synonym: British thermal unit. Synonym: joule. (05 Mar 2000) |
| unit of intermedin | A unit based upon the action of the hormone in causing the expansion of the melanophores in a hypophysectomised frog; equal to 1 ug of alkali-treated USP Posterior-pituitary Reference Standard. (05 Mar 2000) |
| unit of length | Metric system and SI: meter, CGS system: centimeter, variable in the English system: inch for short distances, foot for moderate distances and for elevation, mile for long distances. (05 Mar 2000) |
| unit of light | See: candela, lux. (05 Mar 2000) |
| unit of magnetic field intensity | See: gauss, tesla. (05 Mar 2000) |
| unit of mass | Metric system: gram, SI: kilogram, english system: pound. (05 Mar 2000) |
| unit of ocular convergence | The amount of convergence required to view binocularly an object 1 meter distant and exerting 1 diopter of accommodation. Synonym: unit of ocular convergence. (05 Mar 2000) |
| unit of oxytocin | The oxytocic activity of 0.5 mg of the USP Posterior-pituitary Reference Standard; 1 mg of synthetic oxytocin corresponds to 500 IU. (05 Mar 2000) |
| unit of penicillin | The penicillin activity of 0.6 ug of penicillin G. (05 Mar 2000) |
| unit of radioactivity | See: Becquerel. (05 Mar 2000) |
| unit of thyrotrophic activity | The activity of an amount of an extract of the anterior lobe of the hypophysis which, given daily for 5 days, will cause the thyroid of a guinea pig (weighing 200 g) to reach a weight of 600 mg. (05 Mar 2000) |