As these molecules are two of the most widely used aptamers and reported to bind the human protein when expressed natively on human cells (22Rv1 and LnCAP10–12), ectopically on mouse cell lines (B16-PSMA, CT26-PSMA49,50), and even bind to canine cells expressing the canine PSMA (canine hemangiosarcoma cell lines51), we performed experiments on recombinant PSMA protein to reconcile these results. Here, FOLH1 is linked to angiosarcoma.