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Okhuysen PC, Rich SM, Chappell CL, Grimes KA, Widmer G, Feng X, Tzipori S.  2002.  Infectivity of a Cryptosporidium parvum isolate of cervine origin for healthy adults and interferon-gamma knockout mice.. J Infect Dis. 185(9):1320-5.

Widmer G, Akiyoshi D, Buckholt MA, Feng X, Rich SM, Deary KM, Bowman CA, Xu P, Wang Y, Wang X et al..  2000.  Animal propagation and genomic survey of a genotype 1 isolate of Cryptosporidium parvum.. Mol Biochem Parasitol. 108(2):187-97.

Feng X, Rich SM, Akiyoshi D, Tumwine JK, Kekitiinwa A, Nabukeera N, Tzipori S, Widmer G.  2000.  Extensive polymorphism in Cryptosporidium parvum identified by multilocus microsatellite analysis.. Appl Environ Microbiol. 66(8):3344-9.