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UPDATE: AIDS Vaccine Scandal
AMES, IA (CBS2/FOX28) - A former Iowa State University scientist has pleaded not guilty to charges saying he falsified his research for an AIDS vaccine.
In June, prosecutors charged Dong-Pyou Han with fraud saying he manipulated the data so his research team would get millions in grant money.
Prosecutors say before Han resigned last fall, he told university officials he had spiked samples of rabbit blood with human proteins to make it appear the vaccine was working.
That misconduct was uncovered in 2013 when Harvard scientists discovered those spiked samples.
If Han is convicted, he could spend twenty years in prison.