Fig. 1A, 1A', 1A'' ER clusters are positioned under f-actin fenestrae in fixed and live oocytes.
Oocytes fixed with 2% paraformaldehyde and 1% picric acid. Immunolabelled with anti-Calreticulin (green), Alexafluor 568-phalloidin (red), and Hoechst 33342 (blue).