Skip to main content
. 2013 Feb 26;4:1537. doi: 10.1038/ncomms2556

Figure 4. Transmission electron microscopy of 4-day free-swimming hatchling of Xenoturbella bocki.

Figure 4

(a) Cytoplasmic extension of developing muscle cell, situated between the epidermal cell layer and the gastric cell mass. Scale bar, 0.5 μm. (b) Developing muscle cell with electron-dense cytoplasm and myofilament bundles in cross-section, also seen in oblique section (arrow). Scale bar, 0.5 μm. (c) Part of developing muscle cell, showing myofilaments in longitudinal section. Scale bar, 0.5 μm. (d) Point-core neuronal vesicles and neurotubules in nerve cell synapse. Scale bar, 0.25 μm.