Representative images of GFP-positive clones with immunofluorescence staining of GFP and luminal marker Krt8/18 in mammary glands of control or Bcl11b -KO group based on Krt14-lineage tracing at day 17.5 of the 3 rd pregnancy after pulsing at puberty. The selected regions by the yellow boxes were split for different channels. Green, GFP; red, Krt8/Krt18; blue, DAPI. Scale bars, 20 m.
