A woman who plays cards one night a month with a group of friends was concerned that she always woke up her husband when she came home around 11:30.
So she decided to be considerate and not rouse him this time. She undressed in the living room and, purse over arm, tiptoed nude into the bedroom, only to find him sitting up in bed, reading.
"Oh No!" he exclaimed. "Did you lose EVERYTHING?!?"
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.] |
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