By Steve Usdin
Contributing Editor

WASHINGTON - An anti-biotechnology group filed a Citizen Petition last week seeking to have FDA overturn its 1993 decision to approve use of Posilac, Monsanto Co.'s recombinant bovine somatotrophin (rBST), to stimulate milk production in dairy cows. The petition, filed by the Center for Food Safety (CFS), is based on a leaked report by a government committee in Canada, which has been reviewing rBST for nine years.