library_construction_protocol: Type II epithelial cells were enriched from homogenized murine lung tissues by filtration for cells <20 microns and antibody depletion of CD45 and CD16/32-expressing cells. Total RNA was isolated using phase-separation with TRIzol following manufacturer recommendations, including DNase treatment. Further purification used RNeasy kits (Qiagen), per manufacturer's instructions. RNA purity was determined by spectrophotometry, concentration by Qbit fluorometry, and quality by Bioanalyzer. The Illumina TruSeq stranded mRNA kit with selection for polyadenylated trascripts was used to prepare sequencing libraries according to recommended protocols.