THE LYMPHOCYTE LOCOMOTION ASSAY IN COLON AND BREAST-CANCER LONG SURVIVORS

Cell-mediated immunity versus tumour antigens (cytosols) of the same h istotype and site was evaluated by means of the lymphocyte locomotion (LL) assay in 46 colorectal adenocarcinoma and 41 breast ductal infilt rating carcinoma patients 36-220 months after surgical resection. Lymp hocyte locomotion positivity was observed in 27/46 (58.7%) and 27/41 ( 65.9%) patients, respectively. These results indicate that a high perc entage of long survivors retain an immunologic memory of the tumour an tigen to which they have been exposed.