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Animal bioassays. (A) Survival curve of tgElk mice i.p. inoculated with 1% CWD-BH incubated with quartz (Qz) and Luvisolic Ae horizon for 1 and 30 weeks; (B) Survival curve of tgElk mice i.p. inoculated with 1% CWD-BH incubated with Luvisolic Ae and Chernozemic Ah horizons for 1 week and 55 weeks.
