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Recrudescent parasites showed the same patterns of sensitivity to pyrimethamine (PYR) as the control parasites did. (A) Control parasites; (B to H) recrudescent parasites: 105 for 4 days (B), 106 for 4 days (C), 106 for 6 days (D), 107 for 6 days (E), 108 for 8 days (F), 109 for 8 days (G), and 109 for 10 days (H).
