When Kathy Barker was a graduate student at the University of Massachusetts Medical School during the 1980s, she knew she wanted to do more than just bench work on polymorphonuclear leukocytes, a first line of defense against infection. At that time, the United States was in the midst of its involvement in Nicaragua and El Salvador, and Barker decided to invite speakers to talk about US foreign policy, encouraging her colleagues and friends to attend. "There were people who looked down on me," she says. "You were supposed to be doing science and not other things." Barker's thick skin saved her from too much bruising. It was only the first of many civic actions she would take.
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