VirusVirus

構造DNA or RNA

Protein

病毒的區分依外觀區分依遺傳物質區分

Figure 17.01Figure 17.01

How are virus get into cells ?How are virus get into cells ?

Bacterial virusBacterial virus

Influenza virusInfluenza virus

Types of genetic material in different virusTypes of genetic material in different virus

Double-stranded DNA

Single-stranded DNA

Double-stranded RNA

Single-stranded RNA(+)sence RNA

(-)non-sence RNA

Bacteriophage lambdaBacteriophage lambda

BaculovirusBaculovirus

對特定寄主有極高的致病力與專一性，其宿主侷限於昆蟲及部分甲殼類動物

桿狀病毒包括核多角病毒（ nuclear polyhedrosis virus ， NPV ）顆粒體病毒（ granulosis virus ， GV ）

Baculovirus ( 續 )Baculovirus ( 續 )

Double-steand ,circular DNA

80-200kb size

Accommodate an additional 100kb or more of foreign DNA

Two types of virionsPolyhedra –derived virion (PDV)

Budded virion (BV)

Baculovirus ( 續 )Baculovirus ( 續 )

Baculovirus 的感染機制Baculovirus 的感染機制

HIVHIV

PolioviursPolioviurs

Naked virion

(+)single-strand RNA

Producing an RNA replicase

Polyprotein

Influenza virusInfluenza virus

THE END