Treatment with DMSO solvent does not induce anaphase I or PBE in Cep55-depleted oocytes. Timelapse imaging of a Cep55-depleted oocyte expressing H2B-RFP (red) and stained with SiR-tubulin dye (green) treated with DMSO solvent from 6 h post-GVBD. Time scale is shown in hh:mm. Note that neither anaphase nor PBE occur.