Aiming ultimately to make healthier beef, eggs, and other farm products, scientists have used a worm gene to genetically engineer
mice whose tissues are unusually rich in the heart-healthy fats found mainly in fish.
In part because of biologists' growing capability to genetically engineer
mice, the number of these animal models has exploded over the past decade.
The Calgene researchers set out to genetically engineer
canola to make abundant stearic acid, so manufacturers can avoid producing trans fatty acids.