Results 171 to 180 of about 28,761 (222)

CryptosporidiumOocyst Surface Macromolecules Significantly Hinder Oocyst Attachment

Environmental Science & Technology, 2006
The role Cryptosporidium parvum oocyst surface macromolecules play in controlling oocyst adhesion (deposition) kinetics to quartz surfaces has been investigated utilizing a radial stagnation point flow system. Deposition kinetics and corresponding attachment efficiencies of viable oocysts were compared with those after treatment with a digestive enzyme
Zachary A, Kuznar, Menachem, Elimelech
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Sporogony of the Oocysts of Isospora canis

Transactions of the American Microscopical Society, 1976
LEPP, D. L. & TODD, K. S., JR. 1976. Sporogony of the oocysts of Isospora canis. Trans. Amer. Micros. Soc., 95: 98-103. The sporulation process of Isospora canis oocysts is described and compared with sporogony of other Isospora species of carnivores. Oocysts had not completed sporulation after 16 days at 10 C.
D L, Lepp, K S, Todd
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Earthworms and coccidian oocysts

Annals of Tropical Medicine & Parasitology, 1974
(1974). Earthworms and coccidian oocysts. Annals of Tropical Medicine & Parasitology: Vol. 68, No. 2, pp. 247-248.
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Killing of Toxoplasma gondii Oocysts by Irradiation and Protective Immunity Induced by Vaccination with Irradiated Oocysts

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, M C, Jenkins, D W, Thayer, O C, Kwok, S K, Shen   +4 more
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Detection of Toxoplasma gondii-like oocysts in cat feces and estimates of the environmental oocyst burden

Journal of the American Veterinary Medical Association, 2007
Abstract Objective—To estimate the analytic sensitivity of microscopic detection of Toxoplasma gondii oocysts and the environmental loading of T gondii oocysts on the basis of prevalence of shedding by owned and unowned cats. Design—Cross-sectional survey. Sample Population—326 fecal samples from cats.
Haydee A, Dabritz, Melissa A, Miller, E Robert, Atwill, Ian A, Gardner, Christian M, Leutenegger, Ann C, Melli, Patricia A, Conrad   +6 more
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The Size of the Oocysts of Eimeria labbeana

The Journal of Parasitology, 1959
Size 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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Gaseous disinfection of Cryptosporidium parvum oocysts

Applied and Environmental Microbiology, 1996
Purified 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, T K, Graczyk, M R, Cranfield, J M, Trout   +3 more
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Pathogenicity of Toxoplasma gondii Oocysts to Ponies

American Journal of Veterinary Research, 1980
SUMMARY 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, S E, Weisbrode, J P, Dubey   +2 more
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Staining of coccidial oocysts

Veterinary Record, 1987
M B, Markus, J B, Bush
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Cultivation in vitro of Plasmodium gallinaceum oocysts

Experimental Parasitology, 1968
Abstract 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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