Sergei Pletnev, Ph.D., is a Scientist II working for the Synchrotron Radiation Research Section of the Macromolecular Crystallography Laboratory at the Argonne National Lab.

Scientists are making progress in understanding a bleeding disorder caused by prescription drug interactions, thanks to a high-tech research facility involving two federal national laboratories, Argonne and Frederick.

The facility—a high-energy particle accelerator—produces the clearest and most detailed images of the proteins involved in the disease, which causes bruising under the skin, nosebleeds, bleeding from the gums, and, in rare cases, brain hemorrhaging.