| http://www.w3.org/ns/prov#value | - Patent US6162828 - Cysteine protease inhibitor - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA pharmaceutical composition for inhibiting cysteine protease which comprises a compound of the formula: ##STR1## wherein R1 is a hydrogen atom or an acyl group; R2, R3 and R4, same or different, are a bond, an amino acid residue or a group of t
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