A bacterium that causes Lyme disease (top left), a sea urchin embryo (top right), a crystal of a cow protein (bottom left), and the light-sensing structures of a fruit fly retina (bottom right).

With the launch of a new NIGMS gallery featuring scientific images, we couldn't pick just one as this month's "Cool Image." So, we chose a quartet: a bacterium that causes Lyme disease (top left), a sea urchin embryo (top right), a crystal of a cow protein (bottom left), and the light-sensing structures of a fruit fly retina (bottom right). Together, they represent the beauty and breadth of basic biomedical research. Images courtesy of Tina Carvalho, University of Hawaii at Manoa; George von Dassow, University of Washington; Alex McPherson, University of California, Irvine; and Hermann Steller, Rockefeller University.

Featured in the April 16, 2008, issue of Biomedical Beat.
High res. images can be found at the NIGMS Image Gallery