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A loss of Pointed expression results in a loss of ZAM expression in the posterior follicle cells. (A) Wild-type follicle cells at the posterior pole of the oocyte. The wild-type cells express the GFP marker (green) and LacZ at the posterior pole. (B) In a pntΔ88 mutant clone (highlighted by a broken line) at the posterior pole of the oocyte, no LacZ expression (red) is detected. The overall structure of the ovariole is labelled for α-tubulin (blue).
