Abstract

The effect of radiotherapy on peripheral blood lymphocytes (PBL) of lung cancer and the effect of BCG cell-wall skeleton (BCG-CWS) on recovery of impaired PBL were examined. A remarkable depression of the absolute number of E- or EAC-rosette cells and of the response of PBL to mitogens were observed immediately after radiotherapy, and these continued for several months. With BCG-CWS immunotherapy, the response of PBL to phytohemagglutinin recovered rapidly, compared with non-vaccinated patients. The response of PBL to pokeweed mitogen seemed to give similar results. These results suggested that BCG-CWS injection to the patient receiving radiotherapy was effective for recovery of T-cell response.

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