Scattergrams and cytocentrifuged preparations of FACS E18 cells in 114 and R22 lineages. In both 114 and R22 lineages, doxycycline (Dox) was administered E15–18, and cells were harvested at E18. A and B: R22E18 cells. A: scattergram showing FACS of R22 E18 cells. There were insufficient numbers of TdTomato+/Pdpn− cells to isolate by these methods. B: cytocentrifuged preparations of each group of R22 E18 cells showing immunofluorescence for TdTomato, Pdpn, and AQP5. C and D: 114 E18 cells. C: scattergram showing FACS of 114 E18 cells. D: cytocentrifuged preparations of each group of 114 E18 isolated cells showing immunofluorescence of the different FACS populations for TdTomato (tdT), Pdpn, and SP-C. The TdTomato+/Pdpn− population is SP-C+. E, embryonic day.