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We have systematically made a set of precisely defined, single‐gene deletions of all nonessential genes in Escherichia coli K‐12… Expand Five years ago, the Institute of Medicine (IOM) called for a national effort to make health care safe. Although progress since… Expand SummaryA rapid assay for soil urease in the absence of bacteriostatic agents has been developed. The method comprises incubation… Expand OBJECTIVES
Oxidative damage of biomolecules occurs as a result of potent free radical reactions. In this study, a novel… Expand Small molecule inhibitors have proven extremely useful for investigating signal transduction pathways and have the potential for… Expand Two patients underwent thoracotomy for resection of pulmonary or esophageal carcinoma. Postoperatively, epidural catheters were… Expand Salinities of H[sub 2]O-salt inclusions are most often determined by measuring the melting temperature of ice in the inclusion… Expand The thymidine analog 3'-azido-3'-deoxythymidine (BW A509U, azidothymidine) can inhibit human immunodeficiency virus (HIV… Expand HALOPHILIC bacteria require high concentrations of sodium chloride and lower concentrations of KCl and MgCl2 for growth. The cell… Expand The elucidation of the mechanism of photosynthetic electron transport and photosynthetic phosphorylation depends, in part, upon a… Expand