EXHIBIT 21 SUBSIDIARIES OF GENEREX BIOTECHNOLOGY CORPORATION NAME PLACE OF INCORPORATION Generex Pharmaceuticals, Inc. Ontario, Canada Generex (Bermuda), Inc. Bermuda Antigen Express, Inc. Delaware, USA All subsidiaries are 100% owned except for Generex (Bermuda), which is 80.1% owned. All subsidiaries conduct business only under their respective corporate names. 1