oocyst


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Related to oocyst: cryptosporidium

oocyst

 [o´o-sist]
the encysted or encapsulated ookinete in the wall of a mosquito's stomach; also, the analogous stage in the development of any sporozoon.

o·o·cyst

(ō'ō-sist),
The encysted form of the fertilized macrogamete, or zygote, in coccidian Sporozoea in which sporogonic multiplication occurs; results in the formation of sporozoites, infectious agents for the next stage of the sporozoan life cycle.
[G. ōon, egg, + kystis, bladder]

oocyst

(ō′ə-sĭst′)
n.
A thick-walled structure that contains the zygote of an apicomplexan parasite and releases the infective sporozoites.

oocyst

Public health The infectious stage of coccidian sporozoites–eg, Cryptosporidium parvum and others, which has a protective wall that facilitates survival in water and other environments

o·o·cyst

(ō'ŏ-sist)
The encysted form of the fertilized macrogamete, or zygote, in coccidian Sporozoea in which sporogonic multiplication occurs; results in the formation of sporozoites, infectious agents for the next stage of the sporozoan life cycle.
[G. ōon, egg, + kystis, bladder]

oocyst

A structure that develops on the outer wall of the mosquito's stomach from the fertilized malarial parasite. The parasite divides repeatedly within the oocyst which rapidly fills up with the infective form of the parasite (SPOROZOITES) until it bursts, releasing the sporozoites into the body cavity of the mosquito to be passed on to humans.

oocyst

the cyst which contains the conjugating gametes in SPOROZOANS.

Oocyst

The egg form of the toxoplasmosis organism.
Mentioned in: Toxoplasmosis
References in periodicals archive ?
Periparturient rise in the Cryptosporidium oocyst count in Beetal goats and evaluation of infection in new born kids.
Inactivation of Cryptosporidium parvum Oocysts and Clostridium perfringens Spores by a Mixed-Oxidant Disinfectant and by Free Chlorine.
(2012) argue, environments frequented by cats can be widely contaminated with oocysts of T gondii and farms with a higher number of cats are generally the most contaminated.
We observed 15 (3.2%) samples positive for coccidian oocysts out of 470 samples through microscopy.
tenella based on the predilection site (caecum), morphology of oocyst, and sporulation time of collected oocysts from faeces.
Abulila, "Evaluation of Eimeria oocyst whole antigen vaccine and the enhancive effect of probiotic on broilers," International Journal of Basic and Applied Sciences, vol.
(13,15,16) Experimental studies have demonstrated indirect transmission of C kutzeri by rodents in Eurasian kestrels (Falco tinnunculus), (17,18) although inside the paratenic hosts, there were no developmental stages or increased number of oocysts. (18) Oral inoculation of sporulated oocysts to host-specific species could produce patent infections, and oocysts fed to rodents are capable of transmitting to the definitive host.
After 10 min., tube was filled with the sugar solution, then cover slip was placed on the mouth of the test tube and this coverslip was kept on the slide and observed under low power and high power for demonstration of Oocyst of cryptosporidium which floats on sugar solution.
Detection of Cryptosporidium and Cyclospora Oocyst. A volume of 50 [micro]l of the samples was stained with modified Ziehl-Neelsen technique, according to Casemore et al.
The performance of the adjuvant vaccinated group in terms of mean bodyweight gain, mean lesion score and faecal oocyst output was superior to that of non- adjuvant vaccinated group and unimmunized infected control, however it's mean bodyweight gain inferior to that of commercial vaccine administered group and it's mean lesion score and OPG of faeces inferior to that of anticoccidial administered group.