| regulon | <molecular biology> A situation in which two or more spatially separated genes are regulated in a coordinated fashion by a common regulator molecule. (18 Nov 1997) |
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| browse protection | <ecology> Mechanical or chemical protection of shrubs and trees against damage caused by game and grasing animals. (09 Oct 1997) |
| cathodic protection | <chemistry> The attachment of an active metal to a system to protect the system from corrosion. The active metal serves as the anode, making the metal in the system a cathode. (16 Mar 1998) |
| protection | Synonym: protective block. Origin: see protective (05 Mar 2000) |
| protection test | A test to determine the antimicrobial activity of a serum by inoculating a susceptible animal with a mixture of the serum and the virus or other microbe being tested. Synonym: neutralization test. (05 Mar 2000) |
| sun protection factor | A number on a scale (from 2 upwards) for rating sunscreens. Sunscreens with an spt of 15 or higher provide the best protection from the sun's harmful rays. (12 Dec 1998) |
| ecological protection | <ecology> Protection consists of measures undertaken to protect and preserve elements of an ecosystem's structure and functions against future degradation. (10 Nov 1998) |
| environmental protection agency | <organisation> The U.S. Regulatory agency for biotechnology of microbes. The major lawsunder which the agency has regulatory powers are the Federal Insecticide, Fungicide, and Rodenticide act (FIFRA), and the Toxic Substances ControlAct (TSCA). (30 Mar 1998) |
| united states environmental protection agency | An agency in the executive branch which endeavors to abate and control pollution in the areas of air, water, solid waste, noise, radiation, and toxic substances. (12 Dec 1998) |