Barnyard Biotech Breeds High Hopes: How Dolly and friends could lead to fat profits

Since Dolly, the famous cloned sheep, science has created a herd of biotech animal wonders, including not only clones but so-called transgenic creatures whose genes have been altered. Two sheep named Polly and Molly, for example, were engineered by Dolly's creators to make a drug in their milk. Most recently, researchers in Hawaii and Japan say in tantalizing reports that they have replicated in mice and cattle the most startling claims about Dolly - that she was cloned from an adult animal cell. The question now is: Are Dolly and her biotech barnyard kin the stuff of big profits as well as headlines. A number of companies are betting that there is indeed money to be made. A new industry is taking shape around the twin technologies of transgenics and cloning.