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Fig. 6. Model of bwk and shark interactions. (A) Shark expression
is regulated by BWK function in the germline. Shark activity in the stretch
cells is required for the proper anterior movement of the DA-forming cells as
they move anteriorly. (B) bwk and shark interactions. Shark
in the stretch cells regulates DA-cell movement, while Shark in the DA-forming
cells regulates synthesis of the DA chorion. The suppression of bwk
by SRC42A stretch-cell expression suggests that this protein may function
alongside Shark to mediate DA-cell movement.