This month's winning image was submitted by Sue Karagiosis (Purdue University, (skaragio@bilbo.bio.purdue.edu)). It shows a Drosophila melanogaster retina that has been immunostained for Crumbs and Moesin.

Blue and green fluorescence represents Crumbs and Moesin immunostaining, respectively. The actin cytoskeleton was stained with rhodamine-conjugated phalloidin (red), highlighting the dense filamentous actin bundles of the rhabdomere terminal web. The image was acquired using a confocal microscope (MRC 1024, BioRad). Bar, 10 μm.

The winner would like to acknowledge the help of Donald Ready (Purdue University, (dready@bilbo.bio.purdue.edu)).

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 .