The cover is a collage composed of spots of yeast grown on solid media. In the original figure (Fig. 1A, Park et al., this MIC issue, Vol. 3 No. 2), the relative growth of the spots scored for effects of genetic modifiers on oligomerization of Aβ42, which has been implicated as a toxic species in Alzheimer’s disease. Image by Sei-Kyoung Park and Susan W. Liebman (University of Nevada, USA); modified by MIC. The cover is published under the Creative Commons Attribution (CC BY) license.