Toxicity of Magnevist and Magnevist containing liposomal formulations. Cells were incubated for three hours with respective liposomal Magnevist solution at lipid concentration of 4 mg/ml or with Magnevist solution. Gd-concentration of Magnevist solution was 0.34 mg/ml for ‘Magnevist’ and 0.68 mg/ml for ‘Magnevist 2’. Table 1 lists respective concentrations in wells. Cells of the control group were left in complete growth medium without supplement of liposomes or Magnevist. MTT assays were performed every 24 hours for three days subsequent to treatment. Results are arithmetic means of the three assays, based on medium control group, error bars represent SD.