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  • M Franz
  • 1988
The fine structures of male and female O. volvulus are described. The sexual dimorphism and the age dependent modifications are mentioned in particular. The cuticle of the male worm consists of more layers than that of the female. The epicuticle of the male is wrinkled, whereas the epicuticle of the female forms protuberances. The outer membrane of the(More)
  • M Franz
  • 1980
Male and female Onchocerca volvulus from Liberia, Upper Volta, Tanzania and Guatemala were examined by scanning and by transmission electron microscopy. In the cuticle of the female a basal, a median and a cortical layer can be differentiated. The outer limitation of the cuticle is an irregularly folded surface membrane. Excluding the anterior region the(More)
The fine structures of the midbody regions of male and female Onchocerca gibsoni are described. The epicuticle is wrinkled in the male, and forms long protuberances in the female worm. The lateral chords of the female specimens contain many bacteria and dense bodies. In both sexes the intestinal cells are filled with concentric spherules and the intestinal(More)
The fine structures of the surface of Brugia malayi obtained from Mastomys natalensis are demonstrated by scanning electron microscopy. The head of the parasite is bulbous in shape. The amphidial openings lie beside small elevations. The surface structure of the inner papillae is smooth with a small elevation in the middle. The outer papillae are grooved.(More)
  • M Franz
  • 1982
The fine structure of the cuticle, the hypodermis and the muscle cells of five male worms from Liberia and of two male worms, at least five years old, from Upper Volta is described. The cuticle in the lateral regions is thicker and consists of more layers than in the dorsal and ventral regions. The innermost zone of the hypodermis contains a wide labyrinth(More)
The surface structures of larvae of Wuchereria bancrofti from Liberia were examined by scanning electron microscopy. For this study microfilariae from man, first-stage, second-stage, and third-stage larvae from the vector Aedes aegypti, and fourth-stage larvae from the experimental rodent hosts Mastomys natalensis and Meriones unguiculatus were available.(More)
Multimammate rats (Mastomys natalensis) infected with Litomosoides carinii were treated 65 days after infection with a single oral dose of 50 mg/kg of CGP 20308 or CGP 20376 (Ciba Geigy Limited, Basel). Autopsies were performed between 1 and 28 days after treatment. The numbers of worms and the numbers and condition of intrauterine developmental stages in(More)
  • M Franz
  • 1982
The morphology of the gut and the genital duct of five male worms from Liberia and two male worms at least five years old, from Upper Volta are described. The lumen of the intestine can be distended vesicularly or it can be reduced to a cleft which is filled with microvilli. The intestinal epithelium contains concentric spherules or dense bodies with piles(More)