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Matches in SemOpenAlex for { <https://semopenalex.org/work/W2017369566> ?p ?o ?g. }

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• W2017369566 abstract "The purpose of this study was to characterize the viral symbiont (CPV) of Cryptosporidium parvum sporozoites and evaluate the CPV capsid protein (CPV40) as a target for sensitive detection of the parasite. Recombinant CPV40 was produced in Escherichia coli, purified by affinity chromatography, and used to prepare polyclonal rabbit sera specific for the viral capsid protein. Anti-rCPV40 recognized a 40 kDa and a 30 kDa protein in C. parvum oocysts and appeared to localize to the apical end of the parasite. Anti-rCPV40 serum was capable of detecting as few as 1 C. parvum oocyst in a dot blot assay, the sensitivity being at least 1000-fold greater than sera reactive with total native C. parvum oocyst protein or specific for the 41 kDa oocyst surface antigen. Water samples were seeded with C. parvum oocysts and incubated at 4, 20, or 25 degrees C for greater than 3 months to determine if CPV levels were correlated with oocyst infectivity. Samples were removed monthly and subjected to mouse and cell culture infectivity, as well as PCR analysis for infectivity and viral particle presence. While sporozoite infectivity declined by more than 75% after 1 month at 25 degrees C, the CPV signal was similar to that of control samples at 4 degrees C. By 3 months at 20 degrees C, the C. parvum oocysts were found to be non-infectious, but retained a high CPV signal. This study indicates that CPV is an excellent target for sensitive detection of C. parvum oocysts in water, but may persist for an indefinite time after oocysts become non-infectious." @default.
• W2017369566 created "2016-06-24" @default.
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• W2017369566 date "2004-08-01" @default.
• W2017369566 modified "2023-09-24" @default.
• W2017369566 title "Characterization and potential use of a Cryptosporidium parvum virus (CPV) antigen for detecting C. parvum oocysts" @default.
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• W2017369566 doi "https://doi.org/10.1016/j.mimet.2004.03.007" @default.
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