- An accumulation of fluid in a cystlike loculus, but without an epithelial or other membranous lining.
- A cyst the wall of which is formed by a host cell and not by a parasite.
- A mass of 50 or more Toxoplasma bradyzoites, found within a host cell, frequently in the brain; formerly called a pseudocyst, but now considered a true cyst enclosed in its own membrane within the host cell that may rupture to release particles that form new cysts, and apparently is infective to another vertebrate host.
[pseudo- + G. kystis, bladder]
See Also: bradyzoite
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Examples: glitazone, GI cocktail, etc.