Bose S, Volpatti LR, Thiono D, Yesilyurt V, McGladrigan C, Tang Y, Facklam A, Wang A, Jhunjhunwala S, Veiseh O, Hollister-Lock J, Bhattacharya C, Weir GC, Greiner DL, Langer R, Anderson DG. A retrievable implant for the long-term encapsulation and survival of therapeutic xenogeneic cells. Nat Biomed Eng. 2020 08; 4(8):814-826.