A laboratory worker unloads a box containing laboratory rats at the former Soviet biological weapons development institute in Obolensk, Nov. 28, 2001. Obolensk scientists already are working on genetically altered antibodies that could block the anthrax toxin, a project funded by the European Union, and they are involved in a program to exchange strains with the Centers for Disease Control in Atlanta, Georgia. (AP Photo/Misha Japaridze )