“…This indicates that despite the lack of association between the virus and hormone receptors in the human liver, other factors could be involved in the transcription of MMTV-like virus in the human liver [Groner et al, 1985]. (iv) MMTV-like virus has been detected in hormonally influenced tumors of the breast [Wang et al, 1995[Wang et al, , 2001a[Wang et al, , 2003Etkind et al, 2000;Cotterchio et al, 2002;Ford et al, 2003Ford et al, , 2004bFaedo et al, 2004;Lawson et al, 2004]. In this study, unequivocal evidence of MMTV-like viral env gene sequences in other tumors that are hormonal influenced (ovary, prostate, endometrium, and to a certain extent skin tumors) but not in tumors of the lung with no apparent hormonal influence, as indicated by our immunohistochemistry analyses, was shown.…”