 The latter relayed on the frequency dependence of the resolution of the fast and slow motions of the spin probe and was used to distinguish the fast internal motion of the spin label from the slow protein tumbling.
<clarity>  The latter relayed on the frequency dependence of the resolution of the fast and slow motions of the spin probe and was used to distinguish the fast internal motion of the spin label from the slow protein tumbling.
 The latter relayed on the frequency dependence of the fast and slow motions of the spin probe and was used to distinguish the fast internal motion of the spin label from the slow protein tumbling.