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spectrophotometer |
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spectrophotometer, instrument for measuring and comparing the intensities of common spectral lines in the spectra of two different sources of light. See photometry photometry (fōtŏm`ətrē) ..... Click the link for more information. ; spectroscope spectrograph was developed. It was based on the same principle as the spectroscope, but it had a camera in place of the telescope. In recent years the electronic circuits built around the photomultiplier tube have replaced the camera, allowing real-time spectrographic analysis of ..... Click the link for more information. ; spectrum spectrum, arrangement or display of light or other form of radiation separated according to wavelength, frequency, energy, or some other property. Beams of charged particles can be separated into a spectrum according to mass in a mass spectrometer (see mass ..... Click the link for more information. . How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Viral loads were estimated by comparative analysis by using threshold values obtained with serial dilutions of a 450-nucleotide (nt) in vitro transcribed RNA, quantified spectrophotometrically as previously reported (21), encompassing the target region (detailed protocol available on request). Another aliquot was assayed for DNA spectrophotometrically by absorbance at 260 nm. We measured enzyme activities spectrophotometrically (Lamda 6 UV/VIS)([parallel]) for 5 minutes under saturating substrate and cofactor concentrations. |
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