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8 Cards in this Set
- Front
- Back
Herpesviridae |
Double stranded DNA
Enveloped
Outstanding characteristic: ● Establishes Latency ● Encode Many Enzymes Persist indefinitely in infected hosts ● Frequently reactivated in Immusuppressed hosts ● Some are cancer Causing - CMV,EBV |
|
Hepadnaviridae |
Double stranded DNA
Enveloped |
|
Papillomaviridae |
Double stranded DNA
Non-enveloped
Circular
Outstanding characteristic: ● Stimulate cell DNA synthesis ● Restricted host range & tissue tropism (affinity) ● Significant cause of human cervical cancer ● Viral oncoproteins interact with cellular tumor suppressor proteins |
|
Polyomaviridae |
Double stranded DNA
Non-enveloped
Circular |
|
Adenoviridae |
Double stranded DNA
Non-enveloped
Linear
Outstanding characteristic: Excellent models for nuclear studies of eukaryotic cell processes (They can be used as gene carrier) |
|
Parvoviridae |
Single stranded DNA
Non-enveloped
Outstanding characteristic: ● Very simple viruses ● Human pathogen (B19) has tropism for RBC progenitors ● One genus is replication defective so it requires a helper virus to complete cycle |
|
Circoviridae |
Single stranded DNA Non-enveloped |
|
Poxviridae |
Complex
Enveloped
Outstanding characteristic: ● Largest and most complex viruses ● Very resistant to inactivation ● Virus encoded proteins help evade host immune defense system ● Smallpox is the first viral disease eradicated |
