Research Paper Volume 10, Issue 6 pp 1356—1365

Aged cells in human skeletal muscle after resistance exercise

Figure 4. Regenerative macrophage (CD163+) in human skeletal muscle after resistance exercise. (A) Representative immunohistochemical staining of a muscle cross-section (CD163+ macrophage indicated by an arrow). Scale bar 100 μm. (B) High protein supplementation before and after resistance exercise increased CD163+ macrophage presence in human skeletal muscle 48 h after exercise. * Significant difference against Baseline, P < 0.05; † Significant difference against Low Protein, P < 0.05. Low protein: 14% protein; High protein: 44% protein in weight.