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. 2007 May 5;63(Pt 6):457–461. doi: 10.1107/S1744309107020295

Figure 1.

Figure 1

Photograph of a GroEL crystal illuminated with polarized light. The crystals in this photograph grew to final size within one week at 277 K in a crystallization solution consisting of 100 mM imidazole pH 8 containing 34%(v/v) MPD and 0.32 M MgCl2. The scale bar represents ∼200 µm.