Figure. 5b upper right panel shows photographic images of the tumors; the tumor of mock cells in the left flank of a mouse administered with Poly(I:C) (image on the right) appeared smaller than that in the mouse administered with PBS (image on the left), while the tumors of CD39+ EG-OVA cells in the right flanks were the same size in both mice. This evidence concerns the gene ENTPD1 and neoplasm.