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Safar, Jiri G., Pierre Lessard, Gültekin Tamgüney, Yevgeniy Freyman, Camille Deering, Frederic Letessier, Stephen J. DeArmond, and Stanley B. Prusiner. "Transmission and Detection of Prions in Feces." The Journal of Infectious Diseases 198, no. 1 (2008): 81. https://doi.org/10.1086/588193.

Safar, Jiri G., et al. "Transmission and Detection of Prions in Feces." The Journal of Infectious Diseases, vol. 198, no. 1, 2008, p. 81, https://doi.org/10.1086/588193.