Kenneth A. Wright

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Most of the mucosal epithelium in the anterior small intestine of B10A mice infected with Trichinella spiralis showed no cytopathology. However, isolated foci of damaged cells or dense masses of multinucleate cytoplasm were seen in the crypt-villus junction, or the base of the villi. Cells occupied by the nematode ranged from a nearly normal appearance,(More)
The surface of the cuticle of adult Nippostrongylus brasiliensis has been studied by means of the freeze-fracture technique and by transmission electron microscopy. Some of the surface coat appears to have been shed from the surface of the cuticle of adults fixed in situ in the intestine of its host and from the surface of individuals removed from the(More)
The flatworms (Platyhelminthes) and the round worms (Nematoda) are phyla exhibiting strikingly different levels of cellular organization. In both, sensilla are composed of the endings of sensory dendrites intercalated into their epidermis. In flatworms, sensilla that penetrate the syncytial epidermis bear sensory processes derived from cilia. In free-living(More)
Sense organs that lie just posterior to the lips on the sides of the body of Heterakis gallinarum have been examined by scanning and transmission electron microscopy. The sense organs appear externally as a short peg surrounded by a collarlike elevation of cuticle. Each sense organ contains the endings of 2 sensory dendrites; 1 extending to the tip of the(More)
Trichinella spiralis has been examined by electron microscopy after fixation in situ in the intestine of mice. The worms lie within the cytoplasm of cells of the intestinal mucosa and may occupy both absorptive and goblet cells. They cause little damage to host cells. A few worms have been seen protruding from tissue by SEM techniques. These unusual(More)