Table 1.

Stimulatory effects of anthelmintics and other compounds on R123 transport by Pgp

Compound	Mean log EC50a	SE	Hill slope	SE
Selamectin	−2.016	0.721	0.118	0.034
Emamectin	−0.425	0.016	2.228	0.166
Hoechst 33342	0.862	0.065	0.941	0.12
Vinblastine	1.168	0.106	0.588	0.089
Daunorubicin	1.56	0.065	0.099	0.099
Albendazole	1.787	0.538	0.383	0.199
Doramectin	2.086	0.084	0.648	0.087
Eprinomectin	2.416	0.253	0.295	0.059
Levamisole	2.951	0.143	0.36	0.042
Moxidectin	3.217	0.163	0.402	0.042
Colchicine	3.431	0.507	0.240	0.062
Abamectin	3.465	0.196	0.486	0.062

^aThe EC₅₀ (μM) is the concentration of compound giving a response halfway between the baseline (bottom) and maximal (top) responses.