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Posttranslational modification of proteins with farnesyl and geranylgeranyl groups is a required modification for signaling proteins that includes the small GTPases in the Ras, Rho, and Rab families, heterotrimeric G proteins, and nuclear lamin proteins. To develop antibodies capable of detecting and distinguishing prenylated proteins, we synthesized two(More)
Chlorine-resistant Cryptosporidium parvum oocysts in drinking water play an important role in the epidemiology of cryptosporidiosis. Current methods of detecting these organisms in water are insensitive, labor-intensive, highly subjective, and severely limited by sample turbidity. We describe here an alternative technique utilizing electrochemiluminescence(More)
Antigenic excretory/secretory (E/S) products from Schistosoma mansoni are potentially important in the development of diagnostic assays used to detect circulating antigens in schistosomiasis. The E/S products to be used as antigen(s) for this development must, by necessity, be free of exogenous proteins. The ability to extend serum-free in vitro culture of(More)
Cryptosporidium parvum oocysts in drinking water have been implicated in outbreaks of diarrheal disease. Current methods for monitoring environmental exposures to C. parvum only account for total number of oocysts without regard for the viability of the parasite. Measurement of oocyst viability, as indicated by an oocyst's ability to excyst, is useful(More)
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