New porcine epidemic diarrhea virus variant with a large deletion in the spike gene detected in Tottori prefecture.（鳥取県で分離されたスパイク遺伝子に大きな欠損を有する豚流行性下痢ウイルス）

Tsuneyuki Masuda, Hiroshi Ymasato

International Symposium: Development of Effective PED and TGE vaccine and its application