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Abstract

This study describes transmission experiments using Hammondia heydorni-like oocysts isolated in 1996 from a naturally infected dog. The isolate was designated as H. heydorni-Berlin-1996. Examination of sera from infected intermediate hosts showed immunoblot reactions that resembled patterns...

Author(s)
Schares, G.; Heydorn, A. O.; Cüppers, A.; Conraths, F. J.; Mehlhorn, H.
Publisher
Springer-Verlag, Berlin, Germany
Citation
Parasitology Research, 2001, 87, 10, pp 808-816
Abstract

Two types of Sarcocystis fusiformis cysts were found in the muscle fibres of naturally infected cattle. Their ultrastructure was compared with that observed in experimental infections in calves given sporocysts of Isospora hominis or of the large forms of I. bigemina from cats and dogs one to 5...

Author(s)
Mehlhorn, H.; Senaud, J.; Heydorn, A. O.; Gestrich, R.
Citation
Protistologica, 1975, 11, 4, pp 445-456
Abstract

Two types of S. fusiformis cysts were found in muscle fibres of naturally infected cattle. The fine structure of these cysts was compared with the cysts after experimental infections of calves by sporocysts of I. hominis and the large forms of I. bigemina from cat and dog. It was shown that the...

Author(s)
Mehlhorn, H.; Senaud, J.; Heydorn, A. O.; Gestrich, R.
Citation
Protistologica, 1975, 11, 4, pp 445-455
Abstract

The cyst walls of 13 species of Sarcocystis from different kinds of domestic and wild mammals and birds were compared. Each species had a characteristic primary cyst wall composed of a single unit membrane and thickened by an underlying thin layer of osmiophilic material. Protrusions of various...

Author(s)
Mehlhorn, H.; Hartley, W. J.; Heydorn, A. O.
Citation
Protistologica, 1976, 12, 3, pp 451-467
Abstract

Author(s)
Mehlhorn, H.; Heydorn, A. O.; Gestrich, R.
Citation
Umschau in Wissenschaft und Technik, 1975, 75, 22, pp 701-702
Abstract

Large form sporocysts of Isospora bigemina from dogs were fed to 4 calves and the resulting "thin-walled" cysts of Sarcocystis fusiformis were examined by electron microscopy. After day 34, cysts containing only metrocytes were formed. By day 76, only infective merozoites were seen. The parasite...

Author(s)
Mehlhorn, H.; Heydorn, O.; Gestrich, R.
Citation
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung 1 Originale, A, 1975, 232, pp 392-409
Abstract

Calves were infected with sporocysts of the large form of Isospora bigemina from dogs, producing "thin walled" cysts of Sarcocystis fusiformis in the muscles. Cyst formation began 34 days after infection as a parasitophorous vacuole containing ovoid metrocytes. After the 76th day banana-shaped...

Author(s)
Haydorn, A. O.; Mehlhorn, H.; Gestrich, R.
Citation
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung 1 Originale, A., 1975, 233, pp 123-137
Abstract

Cyst formation began 34 days after infection. On the 62nd day after infection mainly metrocytes and a few banana-shaped stages (merozoites) were present in the cysts. From the 76th day mainly merozoites were found. The metrocytes were similar in structure to those of other species and there was no...

Author(s)
Heydorn, A.-O.; Mehlhorn, H.; Gestrich, R.
Citation
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Erste Abteilung, Originale, 1975, 233A, 1, pp 123-137

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