"Diseases caused by protozoa and helminths, such as malaria and schistosomiasis,...Drug-efflux and target-site gene expression patterns in Haemonchus contortus larvae able to survive increasing concentrations of levamisole in vitroAugust 2014Ranbir S. Sarai | Steven R. Kopp | Glen T. Coleman | Andrew C. KotzeWhile there is some evidence that changes in nicotinic acetylcholine receptor (nAChR) subun" . . . .