Figure 2.

NanoString nCounter gene expression analysis of freshly sorted fibroadipogenic progenitors from rotator cuff and deltoid muscle samples. (A) Heat map demonstrating transcriptome heterogeneity of rotator cuff (n = 8) and deltoid (n = 8) samples across the 20 genes with the highest average expression. (B) P value distribution charts demonstrating significant univariate association between muscle type (cuff vs deltoid) and overall gene expression but not with patient age. (C) Principal component (PC) analysis map of patient age as a continuous variable demonstrating weak association between age and overall gene expression. (D) Differential gene expression volcano plot of patient age as an independent variable, controlling for muscle type (cuff vs deltoid) and tear size (all partial tear samples). *P < .05.