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SDS-PAGE analysis of crystal proteins from the wild-type strain and recombinant strains of B. thuringiensis. Lane M, molecular mass standards; lane 1, YBT-1518; lane 2, BMB0224 (harboring the 45-kDa protein gene cry55Aa1); lane 3, BMB0250 (harboring the 54-kDa protein gene cry6Aa2; lane 4, BMB0215 (harboring the 140-kDa protein gene cry5Ba2).
