这个词是什么意思？
A defective virus, containing particles of RNA nucleoprotein in virion-like form, present in patients with acute hepatitis B and chronic hepatitis. It requires the presence of a hepadnavirus for full replication. This is the lone species in the genus Deltavirus.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D003698 · MeSH 2026。
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