Results 181 to 190 of about 39,884 (229)
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The Size of the Oocysts of Eimeria labbeana
The Journal of Parasitology, 1959Size and shape are the features of oocysts most often described, and variation in size during the course of infection has been noted by several authors. Fish (1931), working with Eimeria tenella, and Becker, Zimmermann, and Pattillo (1955), working with E.
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The Journal of Parasitology, 1996
Toxoplasma gondii oocysts are highly resistant to environmental influences. To study the effect of alpha-irradiation on the viability of T. gondii oocysts, 1 million sporulated oocysts of the VEG strain were irradiated to absorbed doses of 0.10, 0.15, 0.20, 0.25, 0.30, 0.40, or 0.50 kGy at 5 C with a 137Cs gamma-irradiation source. Treated oocysts were
J P, Dubey +4 more
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Toxoplasma gondii oocysts are highly resistant to environmental influences. To study the effect of alpha-irradiation on the viability of T. gondii oocysts, 1 million sporulated oocysts of the VEG strain were irradiated to absorbed doses of 0.10, 0.15, 0.20, 0.25, 0.30, 0.40, or 0.50 kGy at 5 C with a 137Cs gamma-irradiation source. Treated oocysts were
J P, Dubey +4 more
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Pathogenicity of Toxoplasma gondii Oocysts to Ponies
American Journal of Veterinary Research, 1980SUMMARY Nine ponies were fed 100,000 infective Toxoplasma gondii oocysts and were given corticosteroid injections before and after feeding the T gondii oocysts. Titers to the Sabin-Feldman dye tests (1:2 to 1:16,384) developed within postinoculation days (pid) 7 to 21 and antibodies persisted to pid 133.
N W, Al-Khalidi +2 more
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Toxoplasma oocysts as a public health problem
Trends in Parasitology, 2013Waterborne outbreaks of Toxoplasma gondii have focused attention on the importance of oocysts shed in the feces of infected cats. Cat feces deposited annually into the environment in the United States total approximately 1.2 million metric tons. The annual oocyst burden measured in community surveys is 3 to 434 oocysts per square foot and is greater in
E Fuller, Torrey, Robert H, Yolken
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Gaseous disinfection of Cryptosporidium parvum oocysts
Applied and Environmental Microbiology, 1996Purified oocysts of Cryptosporidium parvum suspended in approximately 400 microliters of phosphate-buffered saline or deionized water in microcentrifuge tubes were exposed at 21 to 23 degrees C for 24 h to a saturated atmosphere of ammonia, carbon monoxide, ethylene oxide, formaldehyde, or methyl bromide gas. Controls were exposed to air.
R, Fayer +3 more
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A structural study of the Neospora caninum oocyst
International Journal for Parasitology, 1999Oocysts of Neospora caninum were collected from the faeces of a dog fed mouse brains containing tissue cysts of the NC-beef strain of N. caninum. Sporulated oocysts were spherical to subspherical, and were 11.7x11.3 microm. The length/width ratio was 1.04. No micropyle or oocyst residuum was present.
D S, Lindsay, S J, Upton, J P, Dubey
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Development of Toxoplasma Oocysts in Neotropical Felidae
The American Journal of Tropical Medicine and Hygiene, 1972Abstract Toxoplasma gondii oocysts were isolated from the feces of one Felis yagouaroundi (jaguarundi) and two Felis pardalis (ocelot) which initially lacked antibody to Toxoplasma gondii, establishing that not only domestic cats, but other members of the family Felidae can spread Toxoplasma via their feces.
M L, Jewell +4 more
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Cultivation in vitro of Plasmodium gallinaceum oocysts
Experimental Parasitology, 1968Abstract Large numbers of viable infectious Plasmodium gallinaceum sporozoites, virtually free of mosquito tissue, were obtained by culturing somewhat younger stages of the sporogonous cycle. Twenty or more oocysts were placed in each hanging- or sitting-drop culture.
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Cryopreservation of Cryptosporidium sp. oocysts
Transactions of the Royal Society of Tropical Medicine and Hygiene, 1990P, Rossi, E, Pozio, M G, Besse
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