The Viruses
General Characteristics
Size, Shape, Classification,
Composition (NA, protein, lipid)
Infectivity (Host range & tissue tropism)
Replication
Phages vs Animal viruses
DNA viruses vs RNA viruses
Effects on Cells
Cytopathology, Organismal effects
Oncogenes and tumorigenesis
1
The Viruses
General Characteristics
Size:
Shape:
Composition:
Classification:
Infectivity:
Host range
Tissue tropism
Replication
Phages vs Animal viruses
DNA viruses, RNA viruses
Effects on Cells
Cytopathology, Organismal effects 2
Oncogenes and tumorigenesis
E. coli T- phages
Perspective:
Size
Virus Shape
(d) Helical
(e) Icosahedral
Viral Diversity
and
Methods used in
Classification
Viral
Anatomy
Anatomy of a
Herpes virus
Viral Diversity
Viral Diversity
Viral Diversity
The Viruses
General Characteristics
Size, Shape, Composition (NA, protein, lipid)
Classification, Infectivity (Host range & tissue tropism)
Replication
Phages:
Lytic vs lysogenic infection, Transduction
Animal viruses:
DNA viruses vs RNA viruses, Retroviruses
Effects on Cells
Cytopathology, Organismal effects
Oncogenes and tumorigenesis 16
General
Phage
Life
Cycle
Lytic
vs
Lysogenic
Cycle
Transduction
Transduction
Information
Flow in
Different
Viruses
Replication:
A DNA Virus
Replication:
An RNA Virus
Penetration
Penetration:
HIV virus
Biosynthesis:
HIV virus
Release
The Viruses
General Characteristics
Size, Shape, Composition (NA, protein, lipid)
Classification, Infectivity (Host range & tissue tropism)
Replication
Phages vs Animal viruses
DNA viruses, RNA viruses
Effects on Cells
Cytopathology
Organismal effects
Oncogenes and tumorigenesis
29
Cytopathology
Cytopathology
Prions:
Mechanism
of Action