The eGFP reporter is reactivated in the alveolar regions of BRE-eGFP transgenic animals after bleomycin treatment.

<p><b>A</b>) Panoramic picture produced by digitally merging fifty-four 10× images from a lung tissue-section of a BRE-eGFP animal analysed four days after intra-tracheal instillation of bleomycin. Numerous eGFP^pos cells are scattered in alveolar regions. B) Representative higher magnification images of BRE-eGFP transgenics treated with vehicle or bleomycin(days 4 and 12 post-instillation) demonstrating the appearance of eGFP^pos alveolar-cells (scale bar: 150 µm. C) Representative confocal images of tissue sections stained for eGFP, SpC and T1α, demonstrating, eGFP expression in SpC^pos and T1α^lowcells. Scale bar: 25 µm.