title: A technique for in vivo labelling of Fasciola hepatica miracidia with radioselenium.
abstract: Radioactivity is incorporated in Fasciola hepatica and its eggs when 75Semethionine is administered intraperitoneally in chronically infected mice. Maximum egg-bound radioactivity is achieved 2-3 days after the administration of the labelled aminoacid. Seventy-three per cent of the radioactivity of the egg is recovered in the free-swimming miracidium. There appears to be no altered motility or infectivity to snails of miracidia made radioactive at a level corresponding to 6 pCi per larva. Suggestions are made for the application of labelled larvae in studies on various aspects of the parasite-snail contact.
mesh_terms: D000818:Animals; D005210:Fasciola hepatica / Q000648:ultrastructure; D005260:Female; D007274:Injections, Intraperitoneal; D007553:Isotope Labeling / Q000379:methods; D008195:Lymnaea / Q000469:parasitology; D051379:Mice; D010270:Parasite Egg Count / Q000379:methods; D012643:Selenium; D012645:Selenomethionine; D013045:Species Specificity
chemical_list: D012645:Selenomethionine; D012643:Selenium