Marina Franz

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Two male and two female Brugia malayi were collected from Mastomys natalensis, and cross sections from various regions of these worms were studied. The body wall of the female worm is thin throughout its length, whereas in the midbody and posterior region of the male worm the somatic muscles form a thick layer. In both sexes the intestine is thickest(More)
The morphology of the hypodermal chords in the anterior, midbody and posterior region and in worms of different ages are described and the amphids, the cephalic papillae and the nerve ring are demonstrated. At the anterior end, the hypodermal cap comprises the sensory organs. Close behind, the hypodermal chords are differentiated, and several cell margins(More)
We review the technique of heavy quark mass expansion of various operators made of heavy quark fields using a semiclassical approximation. It corresponds to an operator product expansion in the form of series in the inverse heavy quark mass. This technique applied recently to the axial current is used to estimate the charm content of the η, η′ mesons and(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)
The morphology of the cuticle, the interchordal hypodermis and the muscle cells of three mature but not full-grown worms, one worm less than five years old, two worms at least five years old and seven worms of unknown age are described. The cuticle in the anterior region is very similar to that of the male worm, however, in the midbody region the cuticular(More)
The morphology of the oesophagus, the intestine, the ovary, the uterus, the vagina and some inclusions in the body cavity are described in worms of different ages. The oesophagus wall comprises mostly muscle fibrils and a few glandular regions located only in the posterior portion. In the lumen, some material was found. From the anterior to the posterior(More)
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)
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 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)
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