Louise Brown, front center, with Alastair Macdonald front fourth left, the first in vitro fertilized female and male babies born, attend the 25th anniversary reunion at the Bourn Hall Clinic near Cambridge, England Saturday July 26, 2003. Louise Brown was the first born 25 years ago and some 1,000 IVF children gathered to celebrate the anniversary. (AP Photo/Alastair Grant)

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