Movie 2

Serial section sequence of the thin ER tubule shown in Figure 2 (4.5 MB TIFF file). The thin tubule emerges at section 5 and connects at the other end at section 36. Several other narrow tubules are present. This sequence contains 38 sections (30 nm thick) imaged at 3 nm per pixel (Kasthuri et al., 2015). Bar, 200 nm.