Biologies 1002 INDEX

Griffiths, H.R, Lunec, J. and Blake, D.R. (1992). Oxygen radical-induced fluorescence in proteins identification of the fluorescent tryptophan metabolite N formyl kynurenine as a biological index of radical damage. Amino Acids 3, 183-194. 

The understandable correlation among careless technique, absenteeism, cholinesterase inhibition, and elevated average urinary PNP levels suggested that the latter was a highly reliable biological index of chronic parathion exposure and one that could ultimately predict chronic parathion toxicity. 

Poynard, T., Aubert, A., Bedossa, R, Abella, A., Naveau, S., Paraf, F., Chaput, XC. A simple biological index for detection of alcohohc hver disease in drinkers. Gastroenterology 1991 100 1397-1402... 

NF T90-395 2003 (2003) Water quahty - determination of the macrophytes biological index for rivers (IBMR), Association Fran aise de Normalisation (AFNOR). Saint Denis La Plaine. 

South Africa Profile Available http //www.nti.org/e research/profiles/SAfrica/ Biological/index.html fnB2. 

Biological systems produce an extremely wide variety of natural products. This ecological and genetic diversity offers researchers a vast index of compounds to search for innovative weed management agents. 

OSHA has set a standard to keep blood levels in the occupational work force below 40 //g/dL. ACGIH has set a goal relating to a biological exposure index of 50 //g/dL for lead in blood and 150 pjgjdL creatinine for lead in urine. 

Rubidium Analysis, Biological Studies and Occurrence," Chemical Abstracts— Chemical Substances Indexes, American Chemical Society, Washington, D.C. 

Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indexes," Proceedings of American Conference of Government Hygienists, Cincinnati, Ohio, 1996. 

Enzymes are excellent catalysts for two reasons great specificity and high turnover rates. With but few exceptions, all reac tions in biological systems are catalyzed by enzymes, and each enzyme usually catalyzes only one reaction. For most of the important enzymes and other proteins, the amino-acid sequences and three-dimensional structures have been determined. When the molecular struc ture of an enzyme is known, a precise molecular weight could be used to state concentration in molar units. However, the amount is usually expressed in terms of catalytic activity because some of the enzyme may be denatured or otherwise inactive. An international unit (lU) of an enzyme is defined as the amount capable of producing one micromole of its reaction product in one minute under its optimal (or some defined) reaction conditions. Specific activity, the activity per unit mass, is an index of enzyme purity. 

Merck Index 1996. An Encyclopedia of Chemicals, Drugs, and Biologicals. 12th ed. edited by Susan Budavari et ah, Merck and Company 1996. 

A protein with the innocuous name p53 is one of the most frequently cited biological molecules in the Science Citation Index. The "p" in p53 stands for protein and "53" indicates a molecular mass of 53 kDa. The p53 protein plays a fundamental role in human cell growth and mutations in this protein are frequently associated with the formation of tumors. It is estimated that of the 6.5 million people diagnosed with one or another form of cancer each year about half have p53 mutations in their tumor cells and that the vast majority of these mutations are single point mutations. 

Biological exposure index (BEI) Reference values developed by ACGHl as guidelines for the evaluation of potential health hazards. 

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