Fig. 5. AKH-I stimulates locomotion via the octopaminergic system. Control
cockroaches injected with AKH-I walk significantly more than control
cockroaches injected with epinastine (Epi) alone
(***P<0.001) or with AKH-I and epinastine
simultaneously (**P<0.01). Cockroaches injected with
both drugs simultaneously walk as much as cockroaches injected with epinastine
alone (P=1).