Mixture of three protease inhibitors with specificity for inhibiting cysteine proteases. Supplied in lm DMSO.* Contains: ALLN, Antipain, E-64* Specificity: Calpain l/ll, Cathepsin A/B, Cathepsin L/S Papain, and Cysteine ProteasesUsuall ships within 24 hours.This product is sold for laboratory research use only.