serial measurements of blood pressure , body weight , food and water intake , and salt and water excretion were compared in two groups of spontaneously hypertensive rats ( shr ) over a 12-day period : control shr ( n = 11 ) and a group ( n = 9 ) which received supplementary 5-hydroxytryptophan ( 5-htp ; 2 mg/ml ) in its drinking water .
C0043047
water
C0599638
drinking water