Presence of cholinesterases in Echinococcus granulosus protoscolices C. Giménez-Pardo, R.M. Ros Moreno, C. De Armas-Serra and F. Rodriguez-Caabeiro Parasite, 7 1 (2000) 47-50 Published online: 10 September 2014 DOI: 10.1051/parasite/2000071047