Detection of PrPBSE and prion infectivity in the ileal Peyer’s patch of young calves as early as 2 months after oral challenge with classical bovine spongiform encephalopathy

By Ivett Ackermann, Anne Balkema‑buschmann, Reiner Ulrich, Kerstin Tauscher, James C. Shawulu, Markus Keller, Olanrewaju I. Fatola, Paul Brown, and Martin H. Groschup