FOSL1 and breast ductal adenocarcinoma: We used antibodies raised against a FRA-1 specific peptide generated in our laboratory [20], to analyse 106 breast tissues, including 6 normal tissues, 15 dysplasias (6 with atypical lesions), 15 fibroadenomas, 10 in situ ductal carcinomas, 40 ductal carcinomas and 20 lobular carcinomas.