CUX1 and neoplasm: In contrast, in tumor samples and in cell lines derived from MMTV-p200 tumors, we observed expression of a CUX1 protein of apparent M.W. of 200 kDa as well as many bands of lower M.W. including a species migrating at 110 kDa (Figure S2A, lanes 1, 2, 5, 6, 7, 8).