I suggest searchng PubMed ( www.ncbi.nlm.nih.gov/pubmed ) for publications by Dr. R.J. Mason and his colleagues. You will find their publications about isolation of Type II alveolar cells from mouse, rat, and human lungs. For exanple, they published a 1977 publication on "Isolation and properties of type II alveolar cells from rat lung." Disclaimer:This is unrelated to any of my NIH efforts but I did try to isolate Type II alveolar cells during my graduate school research at UCSF.