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cr Py FD-302a (Rev. 10-6-95) 279A-WF-222936 Contination of FD-302 of fo Eon 09/08/2006 ,Page__ 3 lyophilization is not an unusual way to keep stocks of material. While B. anthracis spores are traditionally kept ina refrigerator or freezer, many pathogens are regularly lyophilized for storage, such as &. coli, and it is not uncommon for B. anthracis to be lyophilized as well. commented it is much easier to store lyophilized material because it can be stored in a smaller space and you do not have to be concer i intaining a refrigerator or freezer. According to lyophilizers at USAMRIID are maintained on e "cold side" so they cannot be used for virulent strains. 1 OD believes that collection had a list at one time of the isolates in the also suggested talking to as well as and BRUCE \IVINS who study vaccine strains from around the workd. b7D od OY oo strain was used in