To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 3. FLIP experiments on human forebrain organoids expressing LumER-GFP or MemER-GFP are shown. Bleached area (white region) is shown exactly in the first frame and approximated in the subsequent frames. Scale bar represents 5μm. Human neural progenitors establish a diffusion barrier in the endoplasmic reticulum membrane during cell division Muhammad Khadeesh bin Imtiaz, Lars N. Royall, Daniel Gonzalez-Bohorquez, and Sebastian Jessberger Development 2022. 149:None-None; doi: 10.1242/dev.200613 Download Original Video