Fig. 3. The 3' deletion series. (A) Deletion constructs in schematic form which indicate if the truncated promoter caused GFP expression in germline stem cells (GSCs) and cystoblasts. (B) Confocal sections of the indicated constructs. Asterisks indicate position of GFP-negative GSCs. Arrows indicate the position of the base of terminal filaments when GSCs are GFP positive. (A) –799/+133-GFP; (B) –799/+55-GFP; (C) –799/+4-GFP; (D) –799/-20-GFP; (E) –799/-47-GFP.