oocyst

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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 ?
Cryptosporidium oocysts were stained by modified Ziehl-Neelsen (MZN) staining technique (Shafieyan et al., 2016).
Microscopic examination of the affected areas along with measuring oocysts will confirm the identification.
Among notable characteristics for Cyclospora is the oocyst's pronounced resistance to most chemical disinfectants, including chlorine.
neodebliecki oocysts, 4 (6.2 percent) for Trichuris suis eggs and 3 (4.6 percent) for Balantidium coli cysts.
It was observed that 1 oocyst/lamb can cause the infection which is the minimum infective dose whereas the average numbers of oocysts were 5/lamb to cause infection.
Cats living in crowded conditions, such as shelters or group housing, may be predisposed to coccidia infection, both due to stress and the difficulty in keeping the premises free of infective oocysts.
Control movement of people into the farm as the oocysts can be carried by shoes and cars' wheels.Secure the poultry house to prevent entry of other wild birds into the house.
This confirmed an outbreak caused by environmental contamination (of soil and food) with T gondii oocysts that were likely eliminated by kittens that remained on the farm and had access to the stock of goat food, reinforcing the need for veterinary technical assistance and good management practices.
gondii oocysts. Two samples of oocysts out of 15 coccidian parasites samples were found of Cystoisospora spp.
From two aliquots of 10 [micro]L pellet left overnight (replication), per sample, the quantification of cysts and oocysts was performed by immunofluorescence assay (IFA) using the Merifluor kit (Meridien Bioscience Diagnostics, Cincinnatti, Ohio).
Shortly after ingestion of sporulated oocysts, invading sporozoites penetrate epithelial intestinal cells and endogenous development proceeds with 2-4 merogonies and gamogony.
Coccidia oocysts have a remarkable ability to survive in exogenous environment making its control by common disinfectants difficult [6].