Improvement of Plasmodium Falciparum erythrocyte membrane protein-1 (PfEMP-1) vaccine antigens using directed molecular evolution 由 Heinrichs, V, Mundorff, E, Lohre, J, West, L, Kuznetsova, M, Howard, T, Kortok, M, Marsh, K, Makobongo, M, Liu, X, LaClair, T, Long, C, Whalen, R, Locher, C