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. Author manuscript; available in PMC: 2012 Mar 23.
Published in final edited form as: J Am Chem Soc. 2011 Mar 1;133(11):3943–3953. doi: 10.1021/ja108650x

Figure 6.

Figure 6

1D 13C CP/MAS spectra of [U-13C,15N]-alanine spun at 40 kHz. These spectra were recorded with (a) R212, (b) R211, (c) R221, and (d) R222 irradiation applied to the protons during the acquisition period.