33. introduction to virology

Introduction to Virology Brief History, Viral Structure and Classification, and Role of Host Cells in Viral Infections

Smallpox (Variola Virus) – 10th Century B.C. ,[object Object],[object Object],[object Object]

Smallpox (Variola Virus) -10th Century B.C. ,[object Object],[object Object],[object Object]

Smallpox – 18th Century ,[object Object],[object Object],[object Object]

[object Object],[object Object]

Smallpox – 20th Century ,[object Object],[object Object]

Smallpox – 20 th Century ,[object Object],[object Object],[object Object]

Smallpox – 21 st Century ,[object Object]

Tobacco Mosaic Virus (TMV) ,[object Object],[object Object]

Bacterial Viruses ,[object Object]

Bacterial Viruses ,[object Object],[object Object],[object Object],[object Object],[object Object]

RNA Tumor Viruses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RNA Tumor Viruses ,[object Object]

DNA Tumor Viruses ,[object Object]

DNA Tumor Viruses ,[object Object],[object Object],Human Papilloma Virus

Emerging Viruses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Emerging Viruses ,[object Object],[object Object],[object Object]

Emerging Viruses ,[object Object],[object Object]

Introduction to Virology ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is a virus? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is a virus? ,[object Object],[object Object],[object Object],[object Object]

Growth curves of bacteria (A) versus bacteriophages (B)

Differences in growth curves: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The multiplication cycle of a virus

One step growth curve ,[object Object]

What is a virion? ,[object Object]

Structure of viruses: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Capsomers, continued ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Capsid architecture continued ,[object Object],[object Object],[object Object],[object Object]

Capsid architecture continued ,[object Object]

Structure of Viruses, continued ,[object Object],[object Object],[object Object]

Enveloped viruses Sindbis virus: an enveloped icosahedron

Enveloped viruses Influenza A virus (an orthomyxovirus) and vesicular stomatitis virus (a rhabdovirus): viruses with enveloped helical structures. Although their morphology is different, these viruses are constructedin the same way.

Enveloped viruses ,[object Object],[object Object],[object Object]

Enveloped viruses ,[object Object],[object Object],[object Object],[object Object],[object Object]

Types of viral proteins associated with the envelope Influenza virus

Structural Roles of Host Cells in Viral Infections ,[object Object],[object Object],[object Object],[object Object]

Eukaryotic cells ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Eukaryotic cells, continued ,[object Object],[object Object],[object Object],[object Object]

Classification of Viruses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Baltimore Classification of Viruses ,[object Object],[object Object],[object Object],[object Object],[object Object]

Baltimore Classification of Viruses

33. introduction to virology

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33. introduction to virology