title: Laboratory studies on a differential filtration technique for the recovery of schistosome cercariae from natural waters.
mesh_terms: D000818:Animals; D005374:Filtration / Q000379:methods; D005618:Fresh Water; D011156:Population Density; D012550:Schistosoma mansoni / Q000302:isolation & purification*; D014867:Water
chemical_list: D014867:Water