Figure 4From: Transcriptomic profiling of TK2 deficient human skeletal muscle suggests a role for the p53 signalling pathway and identifies growth and differentiation factor-15 as a potential novel biomarker for mitochondrial myopathiesCaspase-3 activity. (A) P5 with a large mtDNA deletion, (B) P4 and (C,D) two consecutive biopsies of P11. Scale bar = 25 μm.Back to article page