摘要
Dear Editor,Duck virus hepatitis(DVH)is caused by at least threedifferent RNA viruses,including duck hepatitis A virus(DHAV),duck astrovirus type 1(DAstV-1),and duckastrovirus type 2(DAstV-2).The first of these,DHAV,has been classified into three serotypes by
Dear Editor,
Duck virus hepatitis（DVH）is caused by at least threedifferent RNA viruses,including duck hepatitis A virus（DHAV）,duck astrovirus type 1（DAstV-1）,and duckastrovirus type 2（DAstV-2）.The first of these,DHAV,
基金
funded by grants from the Shandong Modern Agricultural Technology & Industry System(SDAIT-13-011-15)
the Science and Technology Commission of Shandong Province(2010GNC10914),China
