'Viral envelope' diaporamas de présentation

Viruses

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Unit 4 Part 6 Human Immunodeficiency Virus

Unit 4 Part 6 Human Immunodeficiency Virus. Terry Kotrla, MS, MT(ASCP)BB. Introduction. Etiologic agent of Acquired Immunodeficiency Syndrome (AIDS). Discovered independently by Luc Montagnier of France and Robert Gallo of the US in 1983-84. Former names of the virus include:

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T4 bacteriophage infecting an E. coli cell

0.5 ?m. T4 bacteriophage infecting an E. coli cell. Science as a Process. Research into TMV led to the conclusion that the pathogen was smaller than a bacterial cell The pathogen was named virus. Virus. Bacterium. Animal cell. Animal cell nucleus. 0.25 ?m.

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Chapter 21

Chapter 21. Infectious Diseases of the Respiratory System. Diseases of the Respiratory System. A. Rhinitis (Common Cold) 1 . Most often caused by rhinoviruses A ) Cause 30-50% of common colds B ) There are more than 100 types of rhinoviruses

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Chapter 24 THE IMMUNE SYSTEM

Chapter 24 THE IMMUNE SYSTEM. Introduction Resistance : Ability to ward off disease. Nonspecific Resistance: Defenses that protect against all pathogens. Specific Resistance: Protection against specific pathogens. Susceptibility : Vulnerability or lack of resistance.

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AP Biology

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HIV

HIV. HIV causes AIDS (aquired immune deficiency syndrome). Infects specific cells of the immune system CD4+ helper T cells Macrophages (scavenger APC cells) Follicular dendritic cells Symptoms Profound immunosuppression Opportunistic infections

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General structure and classification of viruses

General structure and classification of viruses. DR. Mohammed Arif Associate professor Consultant virologist Head of the virology unit. The concept of virus. Edward Jenner (1798), introduced the term virus in microbiology. Virus in Greek means poison.

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Viral Genetics

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VIRUS STRUCTURE AND CLASSIFICATION

VIRUS STRUCTURE AND CLASSIFICATION. Claude MUVUNYI M.D., Ph.D. Terminology. In 1962, Caspar et al. defined the following terms:. Virion : The complete infectious virus particle. Capsid : The protein coat that surrounds nucleic acid. Nucleocapsid : The nucleic acid plus the capsid.

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Chapter 27.

Chapter 27. Viral Genetics. Hepatitis. Viral diseases . Polio. Measles. Chicken pox. Influenza: 1918 epidemic . 30-40 million deaths world-wide. RNA virus. Smallpox. Eradicated in 1976 vaccinations ceased in 1980 at risk population?. Ebola. SARS. hantavirus. Emerging viruses.

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Virus Structure & Classification

Virus Structure & Classification. developed by Hugh B. Fackrell. Lecture Outline. Scope of virology Nomenclature Virion Virus genome Virus symmetry Virion structure. Scope of Virology.

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Central Vietnam V eterinary Institute

Central Vietnam V eterinary Institute. Preparation and Evaluation of an Inactivated Multi-Strain PRRS Vaccine Made with Viruses Isolated from Vietnam. This study is presented by Hung Vu Khac , Ph.D. of the Central Vietnam Veterinarian Institute in Nha Trang , Vietnam. Introduction.

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H S V - 1

H S V - 1. Biological properties. 1.Morphology and structure 1>120-200 nm spherical icosahedral . 2>core dsDNA linear (L segment and S segment ) 3>capsid 162 capsomeres . HSV-1 -capsid from 400kV Spot-scan Electron Cryomicroscopy. 4>envelope

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Lecture 29: Viruses

0.5 ?m. Lecture 29: Viruses. Lecture outline 11/11/05. Types of viruses Bacteriophage Lytic and lysogenic life cycles DNA viruses RNA viruses Influenza HIV Prions Mad cow disease. Figure 18.4 Viral structure. Capsomere of capsid. Membranous envelope. RNA. Capsomere. DNA. Head.

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Viruses

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Viruses

CHAPTER 18. Viruses. Page 328. 1- Viruses are much smaller than bacteria. 2- Virus is about 20nm in diameter. 3- Viruses are not cells. 4- A virus is a genome ???? ???? enclosed in a protective coat ???? ????. Fig. 18.1, Page 329. Genome ( DNA/RNA ). Protein coat ( capsid ).

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Topic 10 Viruses

Topic 10 Viruses. October 21, 2005 Biology 1001. What Are Viruses?. Viruses are infectious particles consisting of nucleic acid enclosed in a protein coat, and sometimes a membranous envelope

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Chapter 18

Chapter 18. The Genetics of Viruses and Bacteria. 0.5 ?m. Figure 18.1 T4 bacteriophage infecting an E. coli cell. Virus. Bacterium. Animal cell. Animal cell nucleus. 0.25 ?m. Figure 18.2 Comparing the size of a virus, a bacterium, and an animal cell.

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