Responses to noradrenaline (NA) and sodium nitroprusside (SNP) in the absence and presence of the NOS inhibitor L-NAME (100 µM) in aorta and small mesenteric arteries from male homozygous Line 11 hArgII mice and their male WT littermate controls.

EC5O values are expressed as –log M, Emax values as the maximum response to NA in g, Rmax values as % reversal of the level of pre-contraction in response to 10 µM of the SNP. Values are given as mean ± SEM. n = 4−8 per group.*P0.05,**P0.01,***P0.001 vs WT control (Student’s t-test).半数有效浓度（EC50）值以–log M形式表示；最大效应（Emax）值为以g（克）为单位的对NA的最大响应；Rmax值为10 µM硝普钠（SNP）作用下，预收缩水平的逆转百分比。所有数值均以平均值±标准误（SEM，Standard Error of the Mean）表示。每组样本量n=4~8。与野生型（WT）对照组相比，*P<0.05、**P<0.01、***P<0.001（学生t检验，Student’s t-test）。