Histochemical labeling of drug receptors in schistosomes: quantitation using computer image analysis techniques

Computer image analysis techniques were used to quantitate the histochemical labeling of schistosomes with dimethylaminonaphthalene-5-sulfonaminoethyl methylamine hydrochloride (DDNS), a fluorescent analog of acetylcholine (ACh). Dose-response curves, consistent with previous experiments, were obtained for DDNS, and for blockage of DDNS labeling, by trifluoperazine and mecamylamine.