EN
Hemolymph plasma polypeptides of three pulmonate snail species were analysed by the method of SDS-PAGE followed by Coomassie, silver or Schiff's staining. Polypeptide patterns were also monitored during the course of Fasciola hepatica infection in Galba truncatula and G. palustris. Infection did not result in the induction of specific molecules, but in an augmentation of a few protein fractions, possibly glycoproteins.