Figure 4From: Elevated serum fibroblast growth factor 21 levels correlate with immune recovery but not mitochondrial dysfunction in HIV infectionCorrelation of serum FGF-21 levels and mitochondrial defects. Correlation of log10 serum FGF-21 (fibroblast growth factor 21) levels in HIV-infected subjects and percentage COX (cytochrome c oxidase) defect on lower limb skeletal muscle biopsy (r = -0.02, p = 0.9). (* Serum FGF-21 >1920 pg/ml, the upper limit of quantitation of the assay).Back to article page