Download VIRUSES - Heartland

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
page
5
page
6
page
7
page
8
page
9
page
10
page
11
page
12
page
13
page
14
page
15
page
16
page
17
page
18
page
19
page
20
page
21
Document related concepts
no text concepts found
Transcript 
VIRUSES
CHAPTER 13
1
What are Viruses?

Obligate intracellular parasites

Viral components
– Nucleic acids
– Capsid
– Envelope
2
Viral Shapes and Sizes

Helical
 Spherical
 Polyhedral
3
Infectious Properties

Viral Host range
– Spectrum of host

Viral specificity
– Types of cells

Viral Origins
– Unknown
4
Nucleic Acid

DNA viruses
– ds DNA
– ss DNA

RNA viruses
– + strand
– – strand
– Double strand
5
11 RNA Virus Families






Picornaviridae
Togaviridae
Flaviviridae
Retroviridae
Paramyxoviridae
Rhabdoviridae
Orthomyxoviridae
6
RNA Virus Families (cont.)

Filoviridae
 Bunyaviridae
 Arenaviridae
 Reoviridae
7
DNA Virus Families






Adenoviridae
Herpesviridae
Poxviridae
Papovaviridae
Hepadnaviridae
Parvoviridae
Emerging Viruses: Previously endemic
8
Viral Replication

Activities
– Adsorption
– Penetration (virus or chromosome)
– Synthesis
– Maturation
– Release
9
Bacteriophages

Plaque counts
14
15
16
Culturing Animal Viruses

Eggs
 Cell Culture
– Primary
– Continuous
17
Viral Cytopathic Effects

Cytopathy

Teratogenic effects
18
Viruslike Agents

Satellites
 Prions
 Viroids
19
21
Related documents