About the cover

December 2008 Volume 15 No 12

Upregulation of transcription on the Drosophila male X chromosome is mediated by the MSL complex. The MSL3 chromodomain is found to be involved in spreading of these activation complexes from initial entry sites. This is represented on the cover in the original artwork "Compression" by Colleen Buzzard (http://www.colleenbuzzard.com). Ink on paper. pp 1318–1325