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Nested PCR screening of blood samples collected for Plasmodium knowlesi Lanes M = Molecular weight marker (100 bp ladder -New England Biolabs); lane 1 = negaitve control, lane 2 = positive control; lane 3-6 and 8 = negative blood samples; lane 7 and 9 = positive blood samples (M2/20 and M2/51 respectively).
