legend Purple and pink pseudo-colouring represents the anti-coilin-labelled Cajal bodies and the filamentous network, respectively. The nuclear pore complexes and Cajal bodies are linked by an extensive actin-dependent filamentous network. Specimens were examined in a field emission scanning electron microscope (DS 130F, Topcon). Scale bar, 167 nm. The contributor acknowledges the help of S. Drummond and S. Bayles.