FIG. 2.
Assay of sensitivities of genus- and species-specific primer sets for the detection of malaria by PCR. Infected blood was serially diluted with noninfected blood. (A) Genus-specific L1 and L2 primers (initial parasitemia, 0.016%). (B) P. vivax-specific Pv1 and Pv2 primers (initial parasitemia, 0.05%). (C) P. falciparum-specific Pf1 and Pf2 primers (initial parasitemia, 0.075%). The numbers above each lane indicate the number of parasites present per microliter of blood; lane M, 100-bp ladder marker (Promega).