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Relative activities of ACE (a) and ACE2 (b) in the lung of nonpregnant and pregnant rats fed the low-protein diet. CT: control; LP: low protein; NP: nonpregnant rats fed either CT or LP diet for 17 days; P: pregnant rats fed either CT or LP diet for 17 days. The error bar represents the mean ± SEM (n = 5-6 rats/diet group/day). ∗ P < 0.05; ∗∗∗ P < 0.001.
