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Attempts to convert the VSG promoter into a terminator. Line 1, wild-type VSG promoter; line 2, VSG promoter depleted of box 2; line 3, VSG promoter depleted of boxes 1 and 2; line 4, wild-type termination fragment 148; line 5, as line 4, but after insertion of box 2. The flag represents the PARP A procyclin promoter.
