Fig. 2From: A comparison of Plasmodium falciparum circumsporozoite protein-based slot blot and ELISA immuno-assays for oocyst detection in mosquito homogenatesELISA OD values for all test and negative control mosquitoes. Plate-specific correction of OD values against background reactivity allowed for the calculation of a universal cut-off for positivity, which was determined statistically (OD 0.311, shown as the dotted line) [36, 37, 43]. Data points are colored as in Fig. 1 Back to article page