Figure 4 .
COPAS-assisted sorting of a pure population of non-transgenic mosquito males.A. About 1,000 freshly hatched larvae of the progeny of a cross between males of the FKX line (having a GFP transgene inserted on the X chromosome) and wild type females were subjected to COPAS sorting. The lower area (gated) corresponds to wild-type male larvae, the upper area to heterozygous transgenic females. B. The 437 male larvae sorted in A were analysed again by the COPAS to assess the occurrence of female contamination.