Did you hear about the psychic amnesiac? He knew in advance what he was going to forget.
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Did you hear about the new restaurant that just opened up on the moon? Great food, but no atmosphere.
Insulin by genetic engineeringIn 1978, U.S. scientists announced the production of human-type insulin by a strain of E. coli bacteria, that had been genetically engineered after months of creative use of gene-splicing techniques. The work was a joint effort by research teams in California at the biochemical firm, Genentech Inc, San Francisco and the City of Hope National Medical Center, Los Angeles. A normal body's production of insulin takes place within cells of the pancreas, programmed by certain genes (segments of DNA). The scientists synthesized copies of these genes and inserted them into a weakened lab strain of the intestinal microbe Escherichia coli. In 1982, insulin was the first recombinant DNA drug to be marketed, Humulin by Eli Lilly & Co.«[Image: graphic suggesting recombinant DNA cell culture.] |
