PHILADELPHIA--(BUSINESS WIRE)--Dec. 20, 2005--Hemispherx Biopharma, Inc. (AMEX: HEB) announces that two papers on its lead biodefense products were accepted for presentation, after peer review, for the February 15th-18th 2006 Biodefense Meeting sponsored by the American Society of Microbiology in Washington, D.C. The conference brings together the scientists, public health researchers and policy makers that are shaping the future of biodefense research. They will discuss policy issues, legislation, and gaps related to biodefense.