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. Author manuscript; available in PMC: 2013 Aug 31.
Published in final edited form as: Methods Mol Biol. 2012;914:47–63. doi: 10.1007/978-1-62703-023-6_4

Fig. 2.

Fig. 2

(Left) A 1.7 mm o.d. capillary tube (30 ml) used in a 1.7 mm cryogenic probe when membrane or protein samples are severely limited. (Right) Membrane sample (150 ml) placed into a 3 mm o.d. Shigemi tube with opaque color showing the appearance of a properly dispersed membrane sample prepared for NMR. We have used 3 and 5 mm Shigemi tubes in 5 mm cryogenic probes.