A novel polypeptide drug carrier is provided wherein polypeptides containing glutamic acid and aspartic acid, or glutamic acid/alanine, or glutamic acid/asparagine, or glutamic acid/glutamine, or glutamic acid/glycine, are conjugated to drugs in order to improve the solubility of the drugs and/or their...http://www.google.se/patents/US20010041189?utm_source=gb-gplus-sharePatent US20010041189 - POLY(DIPEPTIDE) AS A DRUG CARRIER
