The aim of this study was to investigate the effect of chronic crowding stress in condition of disturbed nitric oxide (NO) production by a low dose of NO synthase inhibitor NGNitro-L-arginine methyl ester (L-NAME). Male, 12 weeks old, Wistar rats were exposed to crowding stress (200 cm2 per rat, 5 rats per cage), L-NAME treatment (1.5 mg/kg/day in drinking water) or their combination for 8 week...
