Inflammation in Atm-deficient (Atm-/-) and wild-type mice (Atm+/+). (a) Total cells, (b-d) cell subsets and (e-g) cytometric bead analysis of pro-inflammatory cytokines (IL-6, CXLC1/KC and TNF-α) in bronchoalveolar lavage fluid (BALF) from Atm-/- and Atm+/+ mice before or 9 and 28 days after BLM administration. (h) Representative histological lung sections at 0, 9 and 28 days after the oropharyngeal instillation of saline or BLM in Atm-/- and Atm+/+ mice stained with haematoxylin and eosin. Data are expressed as the mean ±SEM. * compared to baseline, # compared Atm-/- vs. Atm+/+, * P<0.05, ** P<0.01, # P<0.05, ## P<0.01. BLM = bleomycin.