Nematodes were collected from the ceca of
freshly-killed rodents,
fixed in formalin and preserved in 70%
ethanol, then cleared in lactophenol and studied under light
microscope. Drawings were made with the aid of a drawing
tube. Eight specimens were dried using the critical point
method, examined and photographed under scanning electron
microscope (SEM) (Jeol 6360 LV).