We now know of 400 different kinds of restriction enzymes, each of which recognises a different sequence of DNA letters and cuts there, like a pair of scissors that cuts the paper only where it finds the word ‘restriction’.
We must retrench and try to hold on long enough for products in development to reach the market or we will be out of business.
Alberuni praises the efficiency and skilled professionalship of the stone-workers in the following words; "In every place to which some particular holiness is ascribed, the Hindu construct ponds intended for ablutions. …
This classification is based upon 'isogenetic mineral paragenesis', that is the mineral associations that originated about the same time and approximately under the same physicochemical conditions in the same place.
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