This month's winning image was submitted by Elena Kiseleva (Institute of Cytology and Genetics, Russia; Paterson Institute for Cancer Research, UK (ekiseleva@picr.man.ac.uk)). It shows the nuclear pore complexes and Cajal bodies linked by an extensive actin-dependent filamentous network in Xenopus laevis oocyte nuclei.

Purple and pink pseudo-colouring represent the anti-coilin-labelled Cajal bodies and the filamentous network, respectively. The specimen was examined in a field emission scanning electron microscope (DS 130F, Topcon). Bar, 167 nm.

The winner would like to acknowledge the help of Sheona Drummond (sdrummond@picr.man.ac.uk) and Steve Bagley (sbagley@picr.man.ac.uk) (Paterson Institute for Cancer Research, UK), who were also involved in this work.

We are pleased to acknowledge the help of our two external advisors, Ariel Ruiz i Altaba (Developmental Genetics Program, New York Medical Center) and Lelio Orci (Department of Morphology, University Medical Center, Geneva).

To see more Cell of the Month winners, please visit our Cell of the Month archive: Cell of the Month archive