o·o·cyst

(ō′ə-sĭst′)

A thick-walled structure that contains the zygote of an apicomplexan parasite and releases the infective sporozoites.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

oocyst

(ˈəʊəˌsɪst)

(Zoology) an encysted zygote of sporozoan protozoans that undergoes sporogony to produce infective sporozoites

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

o•o•cyst

(ˈoʊ əˌsɪst)

n.

the encysted zygotic stage in the life cycle of some sporozoans.

[1870–75]

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References in periodicals archive

A single Cryptosporidium oocyst is sufficient to cause infection in any susceptible host (Ryan et al., 2014).

EPIDEMIOLOGY OF CYRPTOSPORIDIUM IN APPARENTLY HEALTHY SHEEP IN SOUTHERN KHYBER PAKHTUNKHWA, PAKISTAN

The life stage of Cyclospora that causes infection is called the oocyst. Oocysts can spread when they are passed in the bowel movements of infected people and end up on hands, food, water or other objects.

Cyclospora outbreaks warrant attention

Toxoplasma gondii oocyst survival under defined temperatures.

An outbreak of caprine toxoplasmosis--investigation and case report/ Surto de toxoplasmose caprina--investigacao e relato de caso

Detection of Toxoplasma gondii-like oocysts in cat faeces and estimates of the environmental oocyst burden.

Prevalence of Toxoplasma gondii oocysts through Copro-PCR in cats at Pet Center (UVAS), Lahore, Pakistan

However, total oocyst counts in the litter need to be performed to evaluate contribution of the litter in Eimeria persistency within a flock, but that was not performed in this study.

Chicken Coccidiosis in Central Java, Indonesia: A Recent Update

Oocyst counts were pooled for each subtreatment group and mean counts determined after every two days up to day 20 posttreatment.

Efficacy of Sulphachloropyrazine, Amprolium Hydrochloride, Trimethoprim-Sulphamethoxazole, and Diclazuril against Experimental and Natural Rabbit Coccidiosis

The methodology included microscopic examination, sporulation, oocyst measurements, and photography.

Prevalence of Caryospora Species (Apicomplexa: Eimeriidae) in Falcons in the United Arab Emirates

Cryptosporidium is a coccidian parasite which resides in the microvillus of the lumen and multiply in the microvillus producing Oocyst, leading to malfunction of the lumen.

Study of cryptosporidiosis in children with gastroenteritis in and around Bidar

After challenge with Eimeria, the groups A and D also showed maximum weight gains with low oocyst counts and maximum percent protection against lesions in both caecum and intestine.

Immunological and Therapeutic Evaluation of Wheat (Triticum aestivum) Derived Beta-glucans against Coccidiosis in Chicken

Results of the study demonstrated equipotent efficacy of pure berberine in comparison to that of standard drug amprolium on the basis of reduction in coccidian oocyst output, body weight gain of chicken and feed conversion ratio.

In vivo anticoccidial activity of berberine [18, 5,6-dihydro-9,10- dimethoxybenzo(g)-1,3-benzodioxolo(5,6-a) quinolizinium]--an isoquinoline alkaloid present in the root bark of Berberis lycium