(Murine fibrosarcoma; Inhibin of growh of Dalton’s lymphoma by modification of the cell surface with lysozyme; Inhibited the proliferation of endothelial cells (ECV304) and the growth of xenograft mouse sarcoid S180 and hepatoma 22 models; MCF-7 breast cancer cells; HIV-1; Ongastric cancer cell line and normal human lung fibroblasts). This evidence concerns the gene LYZ and breast carcinoma.