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Expressions of apoptosis-related proteins (Caspase-3, Cleaved Caspase-3, Cleaved Caspase-8, Cleaved Caspase-9, Bcl-2, Bax and Bcl-2/Bax) and PCNA in cerebral cortex of mice offspring on postnatal day 14 after maternal exposure to PM2.5 during pregnancy. Left: the results of western blot; Right: histogram of relative protein levels. * p < 0.05, compared with control; ** p < 0.01, compared with control.
