Figure 4.

The amos upstream flanking region contains multiple enhancers. (A, C, E, F) Stage 10/11 embryos showing GFP (green) and Amos (magenta). (B, D) Stage 15 embryos showing GFP (green) and 22C10 (magenta). (A, B) amos-A-GFP supports expression in the trunk. (C, D, E) amos-B-GFP supports expression in the head, and also shows ectopic expression in the trunk. (E) is a ventral view. (F) amos-C-GFP does not support expression in the embryo.