Angela Zhang, of Cupertino, holds aloft the winner's $100,000 scholarship check after being named the winner of the 2011 Siemens Competition in Math, Science and Technology.  Zhang, a senior at Monta Vista High School, designed an drug delivery system which would deliver the drug salinomycin to cancer stem cells, which she says are responsible for initiating and driving tumor growth. She hopes to major in chemical or biomedical engineering or physics and ultimately become a research professor.
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