Oocyte pronuclear formation in control, baf-1∧L58R, and baf-1∧L58R + lem-4 RNAi embryos, related to Figure 4. Spinning disk confocal fluorescence time series of embryos expressing SP12:GFP (ER in grey, inverted) in indicated conditions. Images were acquired every 20 s playback rate is 80X real time. Scale bar, 2 μm.