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Senescent cells in old TNC-deficient and WT lungs. Senescence-associated beta-galactosidase activity was evaluated on 5 μm cryosections of old TNC KO and WT mice inflated with O.C.T. Compound. Representative images of lung sections from old WT (A,C) and TNC KO (B,D) animals stained for senescence-associated beta-galactosidase activity (blue) and counter-stained with Nuclear Fast Red. N = 3 animals/genotype.
