Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ihe ndị na-eme n'ahụ́ mmadụ: Ọrịa ịba ọcha n'anya nke B na-eme ka ahụ́ mmadụ ghara ịna-arụ ọrụ nke ọma. Hepatitis B bụ otu n'ime pararetroviruses ole na ole a maara: ndị na-abụghị retroviruses ka na-eji ntụgharị ntụgharị na usoro mmegharị ha. Nje virus na- abanye n'ime mkpụrụ ndụ site n'ijikọta ya na NTCP n'elu ya ma bụrụ nke a na- akpọ endocytosed. Ebe ọ bụ na nje ahụ na-amụba site na RNA nke enzyme na-eme, a ghaghị ibufe DNA genomic nje ahụ na cell cell site na protein ndị a na-akpọ chaperones. Mgbe ahụ, a na-eme ka DNA nje nwere akụkụ abụọ nwere akụkụ abụọ site na polymerase nje ma gbanwee ya n'ime DNA okirikiri mechiri emechi (cccDNA). Nke a cccDNA na-eje ozi dị ka template maka transcription nke anọ viral mRNAs site na onye ọbịa RNA polymerase. A na-eji mRNA kasịnụ, (nke dị ogologo karịa genome nje), emepụta mkpụrụ ndụ ihe nketa ọhụrụ na ime protein capsid core na polymerase DNA nje. A na-edozi ihe odide nje anọ ndị a ọzọ ma gaa n'ihu na-etolite ụmụ virions nke a na-ewepụta site na mkpụrụ ndụ ma ọ bụ laghachi na nucleus ma na-emegharị iji mepụta ọbụna akwụkwọ ndị ọzọ. A na-ebugharị ogologo mRNA ahụ laghachi na cytoplasm ebe protein virion P (DNA polymerase) na - emepụta DNA site na ọrụ reverse transcriptase.  Ajụjụ: Kedu nje na-abụghị retroviruses nke ka na-eji ntụgharị ntụgharị na usoro mmegharị ha?
nje ịba ọcha n'anya nke B