Generex Biotechnology Corporation is a development-stage company. The Company is engaged in the research and development of drug delivery systems and technologies. The Company is involved in the development of a platform technology for the oral administration of large molecule drugs, including proteins, peptides, monoclonal antibodies, hormones and vaccines. The Company's subsidiary, Antigen Express, Inc. (Antigen), is engaged in research and development of technologies and immunomedicines for the treatment of malignant, infectious, autoimmune and allergic diseases. The Company holds interests in Hema Diagnostic Systems, LLC (Hema). Hema is in the business of developing, manufacturing, and distributing of in-vitro medical diagnostics for infectious diseases administered at the point of care level. Hema manufactures and sells rapid diagnostic devices based upon its own EXPRESS technology, as well as cassette devices based on customary designs used in the industry.