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(a) Crystals of AprB2. The crystals are 80 µm in the longest dimension. (b) Crystals of AprV2. The crystals are 60 µm in the longest dimension. (c) Crystals of BprB. The crystals are 80 µm in the longest dimension. (d) Crystals of BprV. The crystals are 60 µm in the longest dimension.
