Immunohistochemical stainings of cytochrome P450s associated with pyrethroid resistance. Longitudinal sections from resistant mosquito (Tiassalé) specimens immunostained with A) a-CYP6Z1, B) a-CYP6Z2 and C) a-CYP4G17 specific antibodies (left panel, green color). The middle panel shows the same sections stained red using the nucleic acid stain TOPRO. The merged immunohistochemical staining (P450 stainings and nuclei) appears in the right column. Bar scale (yellow line): 100 nm.