The greeting may be small, but the wishes it sends are big!

Without magnification, this image is not visible to the naked eye. At 50 microns square, it is about half the diameter of a human hair. It was produced by MBL research assistant Blair Rossetti, who laser-engraved the tree outline and text into a thin, polymer membrane using a laser microdissection microscope in the MBL’s Central Microscopy Facility. The microscope (the Zeiss PALM CombiSystem) is typically used to extract microscopic regions of tissue samples for further analysis, or for small-scale manipulations of micron-sized objects.