Who Needs Christmas Lights When You Have Glowing Mammalian Cells?

Who needs Christmas lights when you have glowing mammalian cells? This wreath, assembled from cells with proteins and structured stained different colours, was made by Dr. Donna Beer Stolz at the University of Pittsburgh. It won 19th place in the 2011 Nikon Photomicrography Competition — but top honours for holiday cheer. [Nikon]