Movie 8:S1 acinus imaged by SBF-SEM. SBF-SEM
data set collected of a S1 acinus, displaying eight whole and partially imaged
cells. Five of the cells contain nuclear invaginations, three cells (37%) have
nuclear tunnels with a total of four tunnels observed (two in one cell and one
in each other cell). One cell has neither feature. Pixel size is ~100 nm3.