Recombinat Protein,Human Cathepsin B CTSB Protein, His Tag,Human Cathepsin B, His Tag (CTB-H5222) is expressed from human 293 cells (HEK293). It contains AA Arg 18 - Ile 339 (Accession NP001899).Human Cathepsin B, His Tag is fused with a polyhistidin 1 * 50 µG