Fig. 2. (A,B) Single oocyte of Micrura alaskensis continuously bathed in
20 µM U0126. (A) single confocal plane (left) and compressed
z-series (right) before GVBD. (B) Same oocyte in mature state 2 hours
after treatment with 5-HT plus U0126, showing ER clusters: single optical
plane view (left) and compressed z-series (right). (C) Compressed
z-series of a mature Cerebratulus sp. oocyte with ER
clusters 2 hours after treatment with 5-HT+U0126. Scale bars: 50 µm. GV,
germinal vesicle.