Fig. 5From: Validation of loop-mediated isothermal amplification for the detection of Loa loa infection in Chrysops spp in experimental and natural field conditionsAbsence of L. loa infection in nulliparous Chrysops and Mansonella perstans samples. a Nulliparous samples, b M. perstans (M.P.) samples compared to NTC and positive control (PC). Before amplification (T0), reaction solutions are pink. Samples remained pink after the assay, indicating negativity, as shown on the photographs after a 40-min amplification (T40). Nulliparous Chrysops are flies that have never taken a blood meal; as such, samples should remain negative in the assayBack to article page