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. 2018 Mar 9;14:80. doi: 10.1186/s12917-018-1400-9

Fig. 4.

Fig. 4

The relative amount of PrPSc in the brainstem (obex) is strongly associated with incubation period. The amount of PrPSc in the brain was calculated using optical density readings from an antigen-capture enzyme immunoassay (EIA). The relative amount of PrPSc in the brain of the elk with the lowest EIA result in the linear range was designated a baseline value of 1.0. Results for other elk are expressed as a ratio relative to the baseline elk. Frozen obex was not available for elk #2 (MM132) so this animal is not included in the figure