Objective During an electron microscopic investigation on peripheral blood cells of Hapalogenys nitens,a large number of intranuclear inclusions in neutrophils were found.The aim of this study was to carry out a further ultrastructural observation on these inclusions.Methods\ The intranuclear inclusions in neutrophils were examined by transmission electron microscopy.Results\ The intranuclear inclusions in neutrophils could be subdivided into pseudo and true inclusions.The inclusion bodies contained materia...