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Fig. 3. Effect of expression of tetanus toxin (TNT) in the Gyc-89Da and
Gyc-89Db neurons on survival during development. Flies expressing
GAL4 under the control of the Gyc-89Da and Gyc-89Db
promoters (p89Da-GAL4 and p89Db-GAL4, respectively) were
crossed with flies expressing the active (TNTa) and inactive (TNTi) forms of
the light chain of tetanus toxin (TNT) under the control of the UAS promoter
(UAS-TNTa and UAS-TNTi, respectively) and the survival of
the progeny determined at the stages shown. Survival rates for progeny of
UAS-TNTa flies are shown with solid lines and those for progeny from UAS-TNTi
flies with broken lines; those from p89Da-GAL4 flies are shown by filled
symbols and those from p89Db-GAL4 flies by open symbols. The data represent
the percentage survival calculated from the number of eggs laid and are the
mean ± s.e.m. of at least three trials using up to 300 progeny per
trial. For each developmental stage the experimental and control groups were
compared statistically using Student's paired t-tests and asterisks
indicate P<0.05.
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