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The creators of Dolly the cloned sheep were expected to unveil Britney the
chicken in front of the world鈥檚 press this week. According to press reports,
Britney and her flockmates are genetically engineered to lay eggs containing
anticancer drugs. Helen Sang and her colleagues at the Roslin Institute in
Edinburgh produced the flock with the help of Viragen, a company in Florida.
GeneWorks of Ann Arbor, Michigan, and AviGenics of Athens, Georgia, boast
similar projects
(New Scientist, 13 November 1999, p 25).