Fig. 3From: A Critical Role of Nitric Oxide in Human Immunodeficiency Virus Type 1-Induced Hyperresponsiveness of Cultured Monocytes NO cancels inhibitory effects of NOS inhibitor on cytokine production by HIV-1-infected LPS-stimulated monocytes HIV-1-infected monocyte cultures were stimulated with 0.5 ng/ml LPS alone (control), in combination with l-NMMA (2 mM), or with l-NMMA (2 mM) and SNAP (100 µM). Values are scaled relative to control (100%). Error bars represent SD obtained from three replicates. Statistical analysis was performed as in Fig. 1.Back to article page