Fig. 1.

Twenty-four-hour mean arterial pressure (MAP) in response to a high-salt (HS) diet in gonad-intact and ovariectomized (OVX) spontaneously hypertensive rats (SHR; A) and Dahl salt-sensitive rats (DS; B). C and D: percent increase in MAP from baseline in response to 1 and 2 wk of HS diet. In D, P = 0.05 indicates significant difference from OVX DS following 2 wk of HS. *Significant increase from baseline MAP. +Significant difference from same-strain OVX. Numbers in parentheses refer to n values.