BST2 and breast carcinoma: B49Mod1 does not have an effect on anchorage-independent growth of low BST-2 expressing non-tumorigenic HMLE and MCF10a cells that form little or no colonies, but inhibited growth of MDA-MB 134 luminal A breast cancer cell colonies (Fig. 7F) despite low levels of BST-2 (Fig. 7E).