(D) Flow cytometry analysis of CD34+CD1a- thymocytes submitted to FTOC with fetal thymic lobes deficient for Dll4 and/or Jag2 (Cre+) as indicated above the dot plots. Numbers in dot plots indicate percentage of cells for the corresponding populations. Histograms show TCRγδ expression in CD3+TCRαβ+ (blue) and CD3+TCRαβ- (red) cells.