Table 2. Mortality of FST workers and soldiers to determine sublethal treatment conditions.
| Time (h) | Treatment | Mortality (%) | |
| Workers | Soldiers | ||
| 48 | 1% PB | 100 | 100 |
| 24 | 1% PB | 70 | 70 |
| 12 | 1% PB | 50 | 70 |
| 48 | 0.5% PB | 50 | 50 |
| 24 | 0.5% PB | 0 | 0 |
| 12 | 0.5% PB | 0 | 0 |
| 48 | 0.25% PB | 0 | 0 |
| 24 | 0.25% PB | 0 | 0 |
| 12 | 0.25% PB | 0 | 0 |
| 48 | 0.125% PB | 0 | 0 |
| 24 | 0.125% PB | 0 | 0 |
| 12 | 0.125% PB | 0 | 0 |
| 48 | E.coli/P. termitis | 50 | 70 |
| 24 | E.coli/P. termitis | 0 | 0 |
| 12 | E.coli/P. termitis | 0 | 0 |
| 48 | Control | 0 | 0 |
| 24 | Control | 0 | 0 |
| 12 | Control | 0 | 0 |
Termites were fed with specified concentrations of serially diluted phenobarbital (PB), injected with a 50∶50 mixture of E. coli and P. termitis or left untreated (Control). Sublethal treatment conditions (maximum dose and/or exposure time prior to observed mortality) for target gene induction are in bold print.