Senescence-associated beta-galactosidase
Senescence-associated beta-galactosidase (SA-β-gal or SABG) is a hypothetical hydrolase enzyme that catalyzes the hydrolysis of β-galactosides into monosaccharides. Senescence-associated beta-galactosidase, along with p16Ink4A, is regarded to be a biomarker of cellular senescence.
Source: Wikipedia — Senescence-associated beta-galactosidase (CC BY-SA 4.0)