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Short-term memory shown by using a radial arm water maze memory test in adult and old rats fed normal- or high-salt diets for 4 wk. Bars are means ± SEMs, n = 10. Means without a common letter differ, P < 0.05. A-HS, adult, high-salt diet; A-NS, adult, normal-salt diet; O-HS, old, high-salt diet; O-NS, old, normal-salt diet.
