In contrast to cell lysates from T47D (human breast carcinoma), RT4 (human bladder transitional-cell carcinoma) and MCF7 (human breast adenocarcinoma) cells, analysed alongside the U251 MG cells, no EpCAM was detected in the U251 MG cell lysate or in the T24 (human urinary bladder transitional carcinoma) cell line. This evidence concerns the gene EPCAM and breast adenocarcinoma.