A study of the effect of CO2 on experimental neuroblastoma

The effects of high concentrations of CO2 on experimental murine neuroblastoma tumor were studied. Similar to the experience with the animal model of Wilms' tumor, the local growth of this neuroblastoma model was not affected by concentrations of 76% and 55% of CO2 applied for 10 and 30 minutes. The tumor bearing animals exposed to different CO2 concentrations tended to develop metastases more frequently than the control groups, although no change in survival was noted. Different animals and additional tumor models could be used by others to study the effects of different CO2 concentrations at different exposure times.