Contextual fear memory deficits in gal-1-/- mice. (A) Experimental design used to fear condition WT (n = 11) and gal-1-/- (n = 15) mice. (B) Shock reactivity in WT (black bar) vs. gal-1-/- (white bar) mice. (C) Freezing in context test in WT (black bars) vs. gal-1-/- (white bar) mice. (D) Freezing in tone test in context B (WT, closed circles; gal-1-/- mice, open circles). The tone was presented after 120 s.