Mosquito strains Specific binding (pmole toxin/mg BBMF protein
8 nM 50 nM 150 nM
Madurai (MS) 1.14 (1.19–0.022 )a 1.48 (1.58–1.39)a 1.74 (1.84–1.65)a
Gandhinagar (GR) 0.065 (0.13–0.004) 0.48 (0.65–0.31) 0.67 (1.10–0.24)
MSxGR 0.06 (0.08–0.038) 0.39 (0.58–0.21) 0.37 (0.62–0.11)
F3xGR 0.116 (0.13–0.096) 0.25 (0.27–0.24) 0.097 (0.21–0.02)
F3xMS 0.95 (1.20–0.82) 1.18 (1.33–0.91) 1.44 (1.63–1.32)
Table 3: Direct-binding assay of 125I labeled Bacillus sphaericus (Bs) binary toxin to Culex quinquefasciatus larval BBMF from Bs-susceptible, resistant and their backcrosses. A 95% fiducial limits of upper and lower at different concentrations.