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SDS-PAGE and Western blot (right panel) comparison of different α1-PI's: 1- protein ladder; 2 and 6 - pd-α1-PI standard; 3 - deglycosylated pd-α1-PI; 4 - α1-PI from E. coli (eluted from TALON beads); 5 - r-α1-PI in the supernatant from A. niger D15#26.
