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The effect of prenatal arsenic on miR-21 RNA expression assessed by qPCR in whole homogenate from GD14 (left panel), GD16 (center panel) and GD18 (right panel) in arsenic (filled bars) and control (open bars) male and female brains. Fold expression of miR-21 was acquired by the ΔΔCt (Comparative CT) method. Data are mean ± SEM, n=7.
