Figure 2.Tissue nitrate and cobalamin levels following intraperitoneal administration of NO-Cbl in ratsNitrate concentrations (as nmoles NO/g of tissue) measured in liver, kidney, brain, and brain tumor from male rats bearing intracranial glioblastoma xenografts. Animals received a single intraperitoneal bolus of NO-Cbl at 50, 100, or 150 mg/kg. Measurements were taken at baseline (PBS), 30 min, and 24 h post-injection.