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. 1999 Nov;181(21):6730–6738. doi: 10.1128/jb.181.21.6730-6738.1999

FIG. 2.

FIG. 2

Difference spectra (CO-bound reduced-minus-reduced spectra) of membrane preparations of the laccase-negative strain 4B (A) and the laccase-positive 4VII variant (B) of A. lipoferum. Cells were grown exponentially under full aeration.