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(A–D) Morris water maze path length: males. When analyzing path length, there were no significant differences in the acquisition or reversal phases, but a significant difference on Days 1–2 in the shift-reduced phase with shorter path lengths in B6N males. The number of target crossings during the probe trials was not significantly different for males in any of the three phases. * p < 0.5. Data are the least square means ± S.E.M.
