Chemical cross-linking stabilizes native-like HIV-1 envelope glycoprotein trimer antigens by Schiffner, T, de Val, N, Russell, RA, de Taeye, SW, de la Peña, AT, Ozorowski, G, Kim, HJ, Nieusma, T, Brod, F, Cupo, A, Sanders, RW, Moore, JP, Ward, AB, Sattentau, QJ