protozoan cyst

pro·to·zo·an cyst

infectious form of many protozoan parasites (for example, Entamoeba histolytica, Giardia lamblia, Balantidium coli) usually passed in the feces and provided with a highly condensed cytoplasm and resistant cell wall.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
histolytica can be explained owing to the favorable climate condition for survival of protozoan cyst outside the human host, absence of intermediate host, and lack of latency period to maturation when passed in feces.
A week or so later, he was battling the effects of giardia lamblia, a protozoan cyst spread through animal and human waste.
These dipterous insects are potential mechanical vectors for etiological agents such as viruses, bacteria, protozoan cysts and helminth eggs (Greenberg, 1971; Marchiori, 2006).
Fresh veggies can be the factors of transmission of protozoan cysts and helminth eggs and larvae (Gharavi et al., 2002; Daryani et al., 2008).
No protozoan cysts or trophozoites and no ova off helminths were detected by centrifugation-flotation technique in both cats, whereas they were positives to Giardiacoproantigens.
Fecal samples were processed by the acid-ether concentration method and then examined by microscopy to identify the presence of protozoan cysts and helminth eggs (6).
There were no gross lesions; however, intralesional protozoan cysts suggestive of T gondii were observed microscopically.
The infection doesn't cause symptoms because the protozoan cysts are dormant.
According to the fewer research based on performance evaluation of wastewater treatment process in removal of protozoan cysts and parasite egg that have been studied in Iran and newly constructed of WTPs in Kermanshah province, the main objective of this study was evaluation and Comparison of Paveh, Sarpol-e-zahab (activated sludge with extended aeration) and Kermanshah (activated sludge with conventional aeration) WTPs in removing protozoan cysts and parasite egg and applying appropriate effluent of these systems for irrigation purposes.
New emphasis is placed on disinfection by-products, arsenic, viruses, and protozoan cysts, as well as water reuse, ultraviolet light processes, and natural treatment systems.
SteriPen products use ultraviolet radiation to kill more than 99.9 percent of bacteria, viruses and protozoan cysts such as giardia and cryptosporidia, and the Journey is their top-of-the-line outdoor purifier.