Movie 9:S1 acinus imaged by SBF-SEM. SBF-SEM
data set collected of a S1 acinus, displaying six whole and partially imaged
cells. Four of the cells contain nuclear invaginations, two cells (33%) have
nuclear tunnels with a total of four tunnels observed (three in one cell and
one in the other). Two cells do not display either feature. Pixel size is ~100 nm3.