Figure 4

2,5-Dimethylpyrazine inhibited oviductal functioning in nanomolar doses. Percent inhibition was derived by comparing each dose (n ≥ 2 infundibula) to an untreated control incubated in the vehicle alone (EBSS-H with 0.1% BSA). Each LOAEL (n = 4 infundibula) was compared to the untreated control (n = 4) using the Student's t-Test where *p < 0.5; **p < 0.01; ***p < 0.001.