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Figure 5


Fig. 5. Mammary Gli2-lacZ expression during pregnancy. At 14.5 days mid-pregnancy (14.5dP) Gli2-lacZ expression is especially strong around alveoli (arrows) (A,B). Cross-sections of glands show that at this stage of pregnancy Gli2-lacZ remains in stromal cells (arrows) and is also found in myoepithelial cells (arrowheads) that stain positive for K14 (C) and p63 (D).