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. 2020 Aug 28;52(8):1351–1359. doi: 10.1038/s12276-020-00490-x

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© The Author(s) 2020

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Fig. 3 — a Positive staining of β-galactosidase in replicative senescence models of human diploid fibroblasts (HDFs). Scale bar, 500 μm. b qRT-PCR analysis of representative TREXes in the young and old HDFs.