Freezing a standard way to extending the shelf life of biological samples and pharmaceutical and biological samples are routinely cooled to slow chemical reactions in some experiments. Sieracki in the acidity or alkalinity of a sample can influence its properties, Lu said read more . – ‘We would like freeze proteins, nucleic acids, drugs and other biomolecules to them a long time and they are easier to study under very low temperatures using different spectroscopic techniques and X-ray crystallography,’Lu said. ‘But if the pH changes at low temperature alter the alter the integrity of the sample. ‘. ###Lu is also affiliated with the Beckman Institute.
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12 A Phase II study of cediranib to returning or permanent ovarian, Or peritoneal fallopian tube cancer: Final results of the TDC, Chicago and California consortia studies. Herder herdsman B , et al. Proceedings from the ASCO 2008, par 5,521.