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Caption: Low-grade tumors have very few actively dividing cells (brown stained cell). After malignant transformation however, they show a dramatic increase in the number of actively dividing cells. This image relates to a paper that appeared in the 12 Dec., 2013, issue of Science Express, published by AAAS. The paper, by Brett E. Johnson at the University of California, San Francisco in San Francisco, CA, and colleagues was titled, "Mutational Analysis Reveals the Origin and Therapy-Driven Evolution of Recurrent Glioma."
Credit: [Image courtesy of Joseph Costello and Shaun Fouse]
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