Surface morphology of Trichinella spiralis by scanning electron microscopy.

The surface morphology of larval and adult Trichinella spiralis was studied by scanning electron microsocopy (SEM) of fixed, dried, and metal-coated specimens. The results are compared with those found earlier by various investigators using light and transmission electron microscopy. Some morphological features reported here are revealed uniquely by SEM. These include the pores of the cephalic sense organs, the character of secondary cuticular folds, variations of the hypodermal gland cell openings or pores, and the presence of particles on the copulatory bell.