Banerjee, BBasak, S CGhosh, J J1982-03-012009-05-271982-03-012009-05-271982-03-01Banerjee B, Basak SC, Ghosh JJ. The significance of blood cholinesterase systems in monitoring morphine tolerance. Indian Journal of Medical Research. 1982 Mar; 75(): 422-7http://imsear.searo.who.int/handle/123456789/19030engAnimalsCholinesterases --bloodDrug ToleranceMaleMorphine --pharmacologyRatsThe significance of blood cholinesterase systems in monitoring morphine tolerance.Journal Article