to clarify whether this antigen plays any role in the process of malignant transformation or is expressed at the cell surface only as a consequence of the acquisition of the transformed phenotype , we have investigated its expression at the cell surface of rous sarcoma virus-transformed bhk cells treated with dibutyryl cyclic adenosine 3':5'-monophosphate and at the surface of parental bhk cells transiently transformed by the tumor promoter phorbol myristate acetate .
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cells
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surface of