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Proteolytic activity of CCC. CCC collected from 1- and 5-week-old birds degrade purified C. jejuni His-tagged CmeA after a 1-h incubation period. (A) Coomassie blue staining; (B) immunoblotting with anti-His antibodies. Molecular masses are indicated on the left of each image and shown in kDa. Samples loaded in each lane are indicated. CmeA incubated in buffer without CCC was included as a control.
