Table 2.

Expression of Markers of Aging by Stem Cell Source.

Source of Stem Cells
Markers of Aging	Umbilical Cord	Neonates	Mothers	Adult Volunteers	Adipose Tissue	Ref.
Soluble α-Klotho	↑↑↑	↑	↑	↑	—	Ohata et al.129
Klotho	↑↑↑				↑	Rodrigues et al.34
Cell cycle inhibitors (p16, p21, and p53)	↑				↑↑	Jin et al.126
β-galactosidase	↑				↑↑	Rodrigues et al.34