We actually expected the exact opposite results. (grillinfools.com)
In fact, a similar Indian study done in the 1980s (using monkeys, instead of rats, exposed to a more reasonable dose of aflatoxin when compared to Campbell's study) had the exact opposite results — the monkeys exposed to more casein protein actually had a lower incidence of cancer compared to the rats exposed to less casein. (detoxinista.com)
Interestingly, that is within 8 votes of being the exact opposite result as 2012. (politics.stackexchange.com)