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(A) Representative images of TTC stained sections of brain after brain ischemia (B) Bar graph shows analysis of infarct size. Metformin pre-treatment and post-treatment significantly reduced infarct size. Met Pre: metformin pre-treatment; Met Post: metformin post-treatment; Met Pre-Post: metformin pre and post treatment. *P<0.05, **P<0.01 vs control.
