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Western blot analysis of the expression of recombinant PgsA anchor‐VP2 protein (90 kDa) in pPG612‐VP2/LP and pPG612‐T7g10‐VP2/LP groups. Negative control: pPG612/LP; positive control: pPG612‐VP2/Lactobacillus casei 393. The expression levels were normalized to that of GAPDH as an internal control.
