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Mean ratios (±SEM) of head-to-body weight (A); head-to-carcass weight (B); and brain-to-body weight and brain-to-carcass weight (C) in female foetuses (black bars) and male foetuses (white bars) on Gestational Day (GD) 90. Asterisks indicate significant differences between males and females. * p < 0.05.
