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(a) NaBr continuous gradient centrifugation of a Bt-pSTAB-cry10 recombinant strain autolyzed culture. pb, band containing the recombinant parasporal bodies. (b) SDS-PAGE analysis of gradient-purified Bt-pSTAB-cry10 recombinant strain parasporal bodies (lane 1) and molecular mass markers (lane 2). The numbers on the bands are the estimated molecular masses (in kilodaltons).
