Trypanosome infection outcomes in tsetse of differing age and symbiont status.

aSymbiotic bacteria present in tsetse's gut at the time of trypanosome challenge.
bExperiments were repeated at least twice.
cp values were obtained by comparing infection prevalence of each indicated group to the infection prevalence of mature GmmWT flies.
d1st adult blood meal contained infectious trypanosomes.
e4th adult blood meal contained infectious trypanosomes.
fGmmApo flies underwent intrauterine larval development in the absence of all symbiotic bacteria.
gND, no symbionts detectable by PCR.