Stem Cell Research And Bush's Choice
Re ''Stem Cell Science and the Preservation of Life,'' by George W. Bush (Op-Ed, Aug. 12):
We routinely destroy the ''genetically distinct and valuable'' life of animals for research, food or sport. We have no problem with ending the lives of adult mammals, which are infinitely richer and more complex than the frozen existence of doomed clumps of human cells. What do these clumps have that complex animals lack?