Senescence markers in iAF and NP cells isolated from the same disc and stained at the same time in the presence or absence of TNFα.

(A) Representative images and quantification of SA-βGal stained untreated controls and TNFα treated iAF and NP cells. (B) Representative images and quantification of p16 stained untreated controls and TNFα treated iAF and NP cells. p (TIF)