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Nanobody crystals. (a) Crystals of Nb2907 grown in 0.1 M HEPES pH 7.5, 4.3 M NaCl. (b) Crystals of Nb2919 grown in 0.1 M HEPES pH 7.5, 0.1 M NaCl, 1.6 M ammonium sulfate. All crystals were grown in 96-well Intelli-Plates (Art Robbins Instruments) (see §2 for further details).
