The U.S National Institutes of Health has launched a 3D print exchange website that allows users to download, edit and share models of anatomy, bacteria and lab equipment. Among the current available selections: a frog dissection kit, the base of a cervical spine, a bust of a Macaque, the influenza virus, a microscope, a DNA playset and a “three-dimensional structure of the toxin-delivery particle antifeeding prophage of Serratia entomophila.” 

http://3dprint.nih.gov/