Animals 4 Argentina 4 Cestoda 4 Cestode Infections 4 Chondrichthyes 4 Fish Diseases 4 Microscopy, Electron, Scanning 4 Onchobothriidae 4 Tetraphyllidea 4 article 4 cestode 4 intestine 4 nonhuman 4 Acanthobothrium 2 Acanthobothrium ramiroi 2 Acanthobotrium terezae 2 Calliobothrium 2 Carcharhiniformes 2 Dasyatidae 2 Eucestoda 2 Eukaryota 2 Intestines 2 Mustelus 2 Mustelus schmitti 2 Potamotrygon motoro 2 Potamotrygonidae 2 Potamotrygoninae 2 Prevalence 2 Rivers 2 Sharks 2