Movie 4.

Expression of m5/m8 in control, slam and nullo embryos. Movies showing MCP-GFP channel with transcription directed by m5/m8^[III] (maximum intensity projection, left), His2Av-RFP channel in blue overlaid with MCP-GFP in green (maximum intensity projection, center) and transmitted light channel showing membrane growth (cross section, right) in control (top), slam^-/- (middle) and nullo^- (bottom) embryos. 0.36μm/px XY resolution, 33x2μm slices and time resolution of 20s/frame. Anterior to the left; embryo imaged from the ventral side. Time indicates minutes from the beginning of nc14.