Fig. 5. Involvement of Eiger in glial division. (A) Time course of the percentage of antennal nerves with active caspase-positive cells. ^*, P<0.05 (Fisher's exact test). (B) Percentage of antennal nerves with BrdU-positive cells after 5-day BrdU treatment. +/+, wild type (CS); eiger¹ and eiger³, homozygous eiger mutants; glial GAL4, GAL4-NP577. Genotypes that are responsible for significant differences are marked by ++ and - - above the bars, indicating high and low levels of BrdU incorporation, respectively (P<0.01, adjusted residual test after Fisher's exact test extended to r x c performed for the seven genotypes analysed). ^*, P<0.05 and -, P>0.05 (Bonferroni test). The number of BrdU-incorporating cells in the flies carrying UAS-eiger alone was slightly lower than in the wild type, possibly because of the difference in genetic background. Colour coding shows the percentage of antennal nerves with the indicated numbers of labelled cells. The sample number (n) is indicated above each bar.