ScienceForPeople.com
Title
Science For People!
Description
Why use male cells in female embryos? This is just simple (if naive) practicality: Y chromosomes can be distinguished with a quick and inexpensive test. If the implanted cells became incorporated into the embryo, they would be easy to spot. So [Norbert Gleicher]'s team placed up to three male cells into female embryos that were 21 days old.
The green fields that ostentatiously carpet the hills of Scotland are home to the drug factories of the Roslin Institute. These factories produce only a modest amount of gas, and nobody in the neighborhood is complaining. After all, these 'factories' are sheep, genetically engineered to produce human proteins in their milk.
Bush's bioethics czar Leon Kass wants to criminalize lifesaving medical research because it violates the natural order of things. Would he have opposed wiping out smallpox?
