Mice assigned to 0.4% NaCl represented by blue symbols, mice assigned to 4.0% NaCl represented by red symbols; mice tested in Training Context represented by squares and solid lines, mice tested in Neutral Context represented by circles and dotted lines. Serum osmolality in context fear conditioned mice from A) Experiment 1, B) Experiment 2 (grey shading), and C) Experiment 3. Experiment 1: 0.4% NaCl females Training Context, n = 8; 0.4% NaCl females Neutral Context, n = 9; 4.0% NaCl females Training Context, n = 8; 4.0% NaCl females Neutral Context, n = 9; 0.4% NaCl males Training Context, n = 8; 0.4% NaCl males Neutral Context, n = 9; 4.0% NaCl males Training Context, n = 8; 4.0% NaCl males Neutral Context, n = 8. Experiment 2: 0.4% NaCl females Training Context, n = 9; 0.4% NaCl females Neutral Context, n = 9; 4.0% NaCl females Training Context, n = 8; 4.0% NaCl females Neutral Context, n = 8; 0.4% NaCl males Training Context, n = 9; 0.4% NaCl males Neutral Context, n = 9; 4.0% NaCl males Training Context, n = 9; 4.0% NaCl males Neutral Context, n = 9. Experiment 3: 0.4% NaCl females Training Context, n = 8; 0.4% NaCl females Neutral Context, n = 9; 4.0% NaCl females Training Context, n = 9; 4.0% NaCl females Neutral Context, n = 8; 0.4% NaCl males Training Context, n = 7; 0.4% NaCl males Neutral Context, n = 8; 4.0% NaCl males Training Context, n = 7; 4.0% NaCl males Neutral Context, n = 7. Data are graphed as mean ± 95% confidence interval.