Figure 4
From: Proton-Detected Solid-State NMR Spectroscopy of Bone with Ultrafast Magic Angle Spinning

Representative 2D 1H/1H chemical shift correlation NMR spectra of bone at 14.1 T under 100 kHz MAS with fp-RFDR mixing times of
(A) 0.8 ms, (B) 3.2 ms, (C) 6.4 ms and (D) 16 ms. Shown also in (B) is a 2D NOESY spectrum (in red) with a 32 ms mixing time overlaid on the 3.2-ms mixing time RFDR spectrum.