This strongly suggests that the sets of cells in each of the four clusters are essentially identical. Click each thumbnail image to see the original figure. The GAL4 expression was detected using UAS-tau. Rows 1 and 2 and the left half of row 3 show the strains that label neurones that project to the medial bundle of the pedunculus. The right half of row 3, row 4, and the left half of row 5 show the strains that label a larger number of neurones in both medial and lateral bundles of the pedunculus.
Most strains show clear separation between the clusters.
The border between the clusters is less clear in Mz 1045 of row 5, which labels only a few scattered neurones that innervate the lateral bundle and the gamma lobe. All figures are montaged from 10-30 photographs.