HBV属于嗜肝dna病毒，具有部分双链环状的DNA基因组。
HBV belongs to Hepadnaviridae with a partially double stranded and circular DNA genome.
质粒是在原核和真核细胞中发现的染色体外的双链环状DNA分子。
Plasmids are exta - chromosomal doublestranded, circular DNA molecules found in prokaryotic and eukaryotic cells.
白斑综合征病毒(WSSV)是一种对虾养殖业中危险极大的传染性病原体，它是一种双链环状d NA杆状型病毒。
White spot syndrome virus (WSSV), a rod-shaped double-stranded circular DNA virus, is a kind of major dangerous infectious pathogen in shrimp culture industry.
白斑综合征病毒(WSSV)是一种对虾养殖业中危险极大的传染性病原体，它是一种双链环状d NA杆状型病毒。
White spot syndrome virus (WSSV), a rod-shaped double-stranded circular DNA virus, is a kind of major dangerous infectious pathogen in shrimp culture industry.
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