Localization of Wee1B, Myt1, and Cdc25B during meiotic resumption. (A) Subcellular localization of Wee1B, Myt1, and Cdc25B was monitored by imaging live cells during meiotic resumption. (B) GFP-Wee1B–injected GV oocytes were stained with anti–lamin A antibody during the course of Wee1B export. (C) Oocyte nuclei were injected with 70 kD of Texas red–labeled dextran, and fluorescence was monitored during the export of GFP-Wee1B. DIC, differential interference contrast. Bars: (A and C) 20 µm; (B) 60 µm.