DNMBP and infection: High levels of silenced tubulin expression were obtained both for the single silencing (tubA mean = 77.0% and tubB mean = 88.7%) and for the double silencing (tubA mean = 82.8% and tubB mean = 83.8%) (Table 1) When tubB was single silenced a slightly higher infection rate was observed, but this rate was essentially similar between the tubulins single or co-silenced and the dsB2M mosquitoes.