Fig. 4. Bristle pictures. Shown are ocellar bristles from Oregon R (Ore R, wild-type, injected with saline), Ore R injected with vinblastine (VB), Ore R injected with latrunculin A (Lat-A), Sb/+ and Sb +/+ Bsb² flies. All micrographs are at the same magnification (x360). Note the multiply split bristle that resulted from latrunculin A injection. Note the very short and fat bristles that resulted from VB injection. In the extreme VB-induced phenotype panel note that all that is left of some bristles is a pigmented `blob' (arrows).