Fig. 7.
Proctolin-induced sustained contractions are larger in cells 4, 12, and 13 than in cells 6 and 7. Average change in tonus induced by 10−6 M proctolin application compared across preparations with: no ablation (Control); with cells 6 and 7 ablated; cells 12 and 13 ablated; and cells 4, 12, and 13 ablated. Significances were observed between the controls and all other groups, and between those preparations with cells 6 and 7 ablated and those preparations with cells 4, 12, and 13 ablated (*P < 0.05). Error bars, SD; N = 10–19.