Movie S2. Accumulation of fluorescent nanos RNA at the oocyte posterior. A time-lapse movie of a Drosophila stage-12 egg chamber containing nanos–MS2 RNA that was labelled with MS2–GFP. Fluorescent nanosforms particles as it accumulates at the posterior cortex. Autofluorescent yolk granules are seen passing in the background. Each second represents 23 min of oogenesis. Reproduced with permission from Forrest & Gavis, Curr. Biol.13, 1159-1168 (2003).