13 C NMR visibility of rabbit muscle glycogen in vivo

Abstract
The integrated 13C NMR intensity of the glycogen Cl resonance was measured in skeletal muscle (biceps femoris region) of nine rabbits under in vivo conditions. Concurrent chemical determinations of glycogen content showed that the in vivo signal was 1.02 ± 0.06 the intensity of analytical samples, where glycogen is known to be ∼ 100% visible. © 1991 Academic Press, Inc.