The invention pertains to methods for using chimeric polypeptides of the formula: B--X wherein B represents the B fragment of Shiga toxin or a functional equivalent thereof, and X represents one or more polypeptides of therapeutic significance. Compositions for therapeutic use comprising the polypeptide B--X are also included.
This application is a divisional of U.S. patent application Ser. No. 09/484,471, issuing, filed on Jan. 18, 2000, which is a continuation of PCT/FR98/01578, filed on Jul. 17, 1998, which claims priority to French Patent Application Serial No. 9709185, filed on Jul. 18, 1997. The entire contents of each of the aforementioned patent applications are hereby incorporated herein by reference.