CDKN1A and pulmonary emphysema: The fact that p21+/Tert-CI mice exhibit the same aging characteristics in the lung as control mice supports the idea that mTERT’s effect in emphysema protection is related to its ability to elongate critically short or damaged telomeres (Matmati et al, 2020; Birch et al, 2015; Fouquerel et al, 2019).