Figure 5
From: Proton-Detected Solid-State NMR Spectroscopy of Bone with Ultrafast Magic Angle Spinning

Experimentally measured build-up curves of the RFDR cross-peaks.
Intensity scales were chosen arbitrarily to enable a direct comparison. The RFDR spectra were obtained for mixing times of 0.8, 1.6, 3.2, 6.4, 9.6 and 16 ms.