Word: synthesiser
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A Harvard research group has announced the synthesis of a family of hormones that may ultimately be of as much medical importance as the steroid drugs are today. The steroids--another group of hormones--are the active ingredients in such drugs as birth-control pills.
Since all the prostaglandins have a closely similar chemical structure--based on a backbone of a ring of 5 carbon atoms to which 15 others are attached--synthesis of all members of the family should be a relatively easy matter. This will make possible their production in large enough quantities...
THE Cell Theory, formulated in 1839, states that all living matter is composed of cells, which are made up of nuclei and cytoplasm. In the last two decades scientists have found that DNA, a long double--chained molecule found in the nucleus, carries the cell's genetic information. This information...
The brain's RNA and protein production are originally determined by deoxyribonucleic acid (the DNA of Biochemist James Watson's bestselling The Double Helix) that is established in the embryo by the sex cells at the time of conception. There is evidence, said Hydén, that the...
It is not at all clear, for instance, that in the Humanities and Social Sciences absorbing snatches of information on a steadily growing number of topics can ultimately add up, as if arithmetically, to a meaningful synthesis. The process of linear learning--involving gradual increments in received knowledge over a...