EMB and neoplasm: In this context, the murine colorectal carcinoma CT26 and melanoma B16 express, respectively, products of the endogenous retroviral genes gp70 and p15E which are recognized by T cells and when animals with lung metastases due to these tumours were inoculated with dendritic cells pulsed with these endogenous antigens significant tumour inhibition was observed [95].