Laird, Walter J.; Aaronson, Wendy; Silver, Richard P.; Habig, William H.; Hardegree, M. Carolyn; Laird Walter J.; Bacterial Toxins Branch, Bureau of Biologics, Food and Drug Administration; Aaronson Wendy; Bacterial Toxins Branch, Bureau of Biologics, Food and Drug Administration; Silver Richard P.; Bacterial Toxins Branch, Bureau of Biologics, Food and Drug Administration; Habig William H.; Bacterial Toxins Branch, Bureau of Biologics, Food and Drug Administration; Hardegree M. Carolyn; Bacterial Toxins Branch, Bureau of Biologics, Food and Drug Administration