Increased infectivity by wild-type Ebola virus of K562 cells expressing hMGL. K562 transfectants (107 cells per clone) were infected with VSV (A) or Ebola Zaire virus (B) (either a 105 [low MOI] or a 107 [high MOI] 50% tissue culture infective dose on Vero cells), and the supernatants were collected on days 1, 2, and 3 after infection. Symbols: ⧫, CR7 (control); ▪, CR4-10.