C-myc and c-erb-2 oncogenes expression in breast cancer patients from sao paulo city - Oshima, C T F; Yamamoto, L; Nagai, Maria Aparecida; Marques, L A; Salaorni, S; Brentani, Maria Mitzi (Reuniao Anual da Sociedade Brasileira de Bioquimica e Biologia Molecular, 1993)