Evaluation of the 3B cELISA using sera from vaccinated noncarrier cattle. During the course vaccine experiment 1, serum samples were collected from vaccinated noncarrier cattle (animals UV3, UV4, UV6, UV7, UV8, UV12, UV15, UV16, UV18, UV20, and UV21) at 7-day intervals from −7 dpv to 168 dpc. Samples were tested using the 3B cELISA (a) and the PrioCheck NS test (b).