Fig. 7: Statistical analyses of the fractional sarcolemmal association of RyR and JPH2 clusters in donor cardiomyocytes.

Aging was associated with a decreasing fractional sarcolemmal association of a RyR and b JPH2 clusters. c The density of JPH2 clusters strongly affected the fractional sarcolemmal association of RyR clusters. Increased JPH2 cluster density was associated with a higher fractional association of RyR clusters.