在HBV感染肝细胞以后，环状病毒基因组进入细胞核，并停留其中不受宿主细胞染色体的影响。

After infecting liver cells, the circular HBV genome travels to the cell nucleus, where it is remains, as a circle, independent from the cell chromosomes.

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该病毒为多粒包埋型，病毒束大多数包含1 ~ 10个病毒粒子。病毒DNA为环状大分子。

The viruses are polyhedron and the number of nucleocapsids ranges from 1 to 10. The virus DNA is a circular macromolecule.

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双生病毒是一类具有孪生颗粒的单链环状DNA病毒。

Geminiviruses are a group of single-stranded circular DNA viruses with twinned particles occurring worldwide.

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