Observations on the effect of radiotherapy, followed by injection of pig lymph node cells, in reducing the number of pulmonary tumors induced by intravenous injection of tumor cells into isogenic mice

Abstract

Tumor-immune pig lymph node cells when injected I V 7 days after tumor cells did not reduce the number of tumors, counted on day 14. However, when preceded by 200 rad thoracic irradiation on day 3 (which increased the number of pig cells settling in the lungs) tumor-immune cells given I V reduced the number of tumors compared with the effect of irradiation alone, or in combina-