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. Author manuscript; available in PMC: 2010 Apr 20.
Published in final edited form as: Dev Biol. 2007 May 24;308(2):593–605. doi: 10.1016/j.ydbio.2007.05.017

Figure 4. En regulates abdominal Hox expression in the P compartment.

Figure 4

Lateral views of Drosophila embryos immunostained for Ubx (green), Abd-A (red), and En (blue). A and B. Ubx and abd-A expression in wild type (A) and en mutant (B) stage 11 embryos. Note that Ubx levels are relatively normal whereas Abd-A levels are decreased. Arrowhead points to lateral cells that express Abd-A independent of En. C and D. Ubx and abd-A expression in wild type (A) and en mutant (B) stage 14 embryos. Note that in older en− embryos Ubx is de-repressed in the anterior abdominal parasegments (arrowhead), whereas posterior abdominal parasegments show increased abd-A expression. E and G. PrdG4;UAS-En embryos illustrating that ectopic En stimulates abd-A (E) and represses Ubx (G). F and H. PrdG4;UAS-VP16En embryos demonstrate that VP16En represses abd-A (F), and weakly activates Ubx (H).