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Starch degradation by B. methanolicus strains. The strains were grown on LB plates supplemented with 0.5% starch and 0.05% xylose and iodine added to detect starch degradation. The dark area in the plate indicates presence of starch and the colorless halo around cells indicates starch degradation. (A) B. methanolicus MGA3 (pTH1mp) and (B) B. methanolicus MGA3 (pTH1xpx-amy).
