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Fig. 9. Loss of ecd in the germline causes previtellogenic arrest of egg chambers. (A,B) ecd2/ecd2 germline clones (arrowheads) can be distinguished from an ecd+/+ clone (arrow) by the lack of staining with the anti-Ecd antibody. All of these clones arrest because of the loss of Ecd, or because of the ovoD1 mutation. (C,D) Mosaic egg chambers containing both Ecd– and Ecd+ nurse cells were identified with the anti-Ecd antibody three days after ecd2 clones had been induced in adult females. Only such mosaic egg chambers formed vitellogenic oocytes (asterisk). (C,C') Confocal sections through the same egg chamber.





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