Effects of endogenous nitric oxide induced by 5-fluorouracil and L-Arg on liver carcinoma in nude mice

Table 3 Optical density of iNOS ,iNOS activity and NO concentration in tumor tissues

	Optical density of iNOS (μmol/L)	Activity of iNOS (U/mg protein)	Concentrationof NO
A: NS group	0.4621 ± 0.0115a	4.87 ± 2.5a	6.58 ± 3.2a
B: 5-FU group	0.4783 ± 0.0107c	9.83 ± 2.31c	17.97 ± 6.16c
C: 5-FU+L-Arg group	0.5269 ± 0.0034e	15.1 ± 4.91e	30.41 ± 8.81e

F of optical density of iNOS , iNOS activity and NO concentration are 31.693, 21.949 and 33.909, respectively,

^aP < 0.05, B vs C;

^cP < 0.05, A vs C;

^eP < 0.05, A vs B.