Source:http://linkedlifedata.com/resource/umls/id/C0019171
MSH: A DNA virus that closely resembles human hepatitis B virus. It has been recovered from naturally infected ducks.,CSP: DNA virus that closely resembles human hepatitis B virus; it has been recovered from naturally infected ducks; do not confuse with Duck Hepatitis Virus 1 or 2, which is a picornavirus.