WE have been very interested to see the letter by Weil and Williams 1 and their remarks on the value of Day's work on chromatography in columns of powdered limestone and fuller's earth, and on ...
Exclusion chromatography can be used to separate molecules on the basis of size 1,2. The technique described here, which uses gel filtration to separate high-molecular-weight DNA from smaller ...
The Mughal Empire ruled over most of modern India, Pakistan and Afghanistan in the 16th, 17th, and 18th centuries. In the early 16th century, a warrior prince named Babur marched east from central ...
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