“…Their status in this respect, i.e. the hormone dependency or independency of the breast tumour, can be monitored by measurement of oestrogen/progesterone receptors (Wittlife, 1984;Beck and Edwards, 1991;Martin, 1991;Horwitz, 1993 September 1989 to December 1993, all 616 patients from whom tumours and their corresponding non-cancerous tissues were available were included in the present study; part of this study has also been described previously (Sato et al, 1990(Sato et al, , 1991 (Feinberg and Vogelstein, 1984). Prehybridisation, hybridisation and autoradiography were carried out as described elsewhere (Sato et al, 1990).…”