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Ush regulates autonomously and non-autonomously multiple morphogenetic properties during dorsal closure. (A) Most of Ush activity in the AS observed in this work occurs prior to or at the initiation of DC. (B) Ush activity in the epidermis is manifested during the later phases of DC. (C) Ush function in the AS and the epidermis act together to allow for the accumulation of actin at the leading edge.
