title: Echinostoma liei miracidia and Biomphalaria glabrata snails: effect of egg age, habitat heterogeneity, water quality and volume on infectivity.
mesh_terms: D000818:Animals; D001700:Biomphalaria / Q000469:parasitology*; D004449:Echinostoma / Q000254:growth & development*; D004777:Environment; D005260:Female; D006790:Host-Parasite Interactions; D010063:Ovum / Q000502:physiology; D013997:Time Factors; D014867:Water
chemical_list: D014867:Water