GM Chickens Lay Eggs
Containing Expensive Human Drugs
By Roger Highfield
The Daily Telegraph - London

Chickens have been genetically engineered to lay eggs that have whites containing expensive human drugs.
An American company announced yesterday that it has made an active foreign enzyme in eggs, providing the first real evidence that GM chickens could be used to mass produce drugs.
A team at Avigenics in Georgia inserted a bacterial gene responsible for a protein enzyme into chicken embryos, which as adults laid eggs containing the enzyme.
The levels of the protein in fresh eggs remained constant for months, and the researchers plan to develop more robust methods of introducing foreign DNA into chickens to increase the amount of protein made.
The company estimates that a single hen could make up to four grams of a human protein such as insulin or growth hormone.

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