Figure. Polymerase chain reaction analysis of patient samples: lane Pf = positive control showing P. falciparum band at position ≈1400 bp; lanes 1–7 and 9–12 = P. vivax– positive samples showing band at ≈500 bp; (lanes 1–7 correspond to cases 1–7, and lanes 9–12 correspond to patients 8–11 numbered in Tables 1 and 2.); lane 8 = sample showing bands at ≈1,400 bp and 500 bp, indicating mixed infection; lane 13 = negative control, normal human DNA; lane M = 1-kb DNA ladder mix (MBI Fermentas, SM#033)
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