Figure 3.

The distribution of β-integrin in cross-sections through pharate adult wings. To control for variations in staining, a pharate wing expressing DG_sα*, thereby destined to form blisters (B), was mounted next to a pharate wing expressing DG_sα, which will form a normal, unblistered wing (A). In each case, Gal4-30A was used to drive expression. The pairs were then sectioned and stained together for peroxidase activity. Sixteen such pairs were processed and the images presented represent the typical degree of variation observed both within and between samples. (Bar = 10 μm.)