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Sweat gland volume is stable during aging. A, 3D image of sweat gland and its components. Scale bars indicate 500 µm. b, Total volume, (C) secretory coil volume, and (D) secretory duct volume of young (<40 years, n = 10) and old (>61 years, n = 8) group are expressed as mean ± SEM There was no significant difference in any of these parameters between the groups as determined by means of Student's t test (NS, not significant)
