The fledgling field of X-ray microscopy lets researchers look inside whole cells rapidly frozen to capture their actions at that very moment. Here, a yeast cell buds before dividing into two. Colors show different parts of the cell. Seeing whole cells frozen in time will help scientists observe cells' complex structures and follow how molecules move inside them. Courtesy of Carolyn Larabell, a cell biologist at the University of California, San Francisco, and the Lawrence Berkeley National Laboratory. Featured in the June 21, 2005, issue of Biomedical Beat. High res. image (339 KB JPEG)