'Viral proteins' diaporamas de présentation

Molecular Biology

Spring 2009 BI 425 UOG. Molecular Biology. Topics for Second Part of Molecular Biology Course: Structural Organization of Eukaryotic Chromosomes. NonTranscribed genes are less susceptible to Dnase 1 Digestion. Fluorescent Labeled Probes hybridized to Interphase Chromosomes.

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CCR5 : and HIV Immunity

CCR5 : and HIV Immunity. Gene Variation Works for and Against HIV Ashley Alexis & Hilda Hernandez. Background. 1981 : Homosexuals in New York and L.A. . Background. 1981: Homosexuals in New York and L.A. 1983: New retrovirus is named HIV 1. Background.

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ANTIVIRAL AGENTS

ANTIVIRAL AGENTS. Viruses, what are they?. Viruses are obligate intracellular parasites, i.e. they utilize:

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By: Dr.Malak El-Hazmi

??? ???? ?????? ??????. Introduction to medical virology. ( Foundation Block , Microbiology : 2012) . By: Dr.Malak El-Hazmi. OBJECTIVES. General characteristics of viruses. Structure & symmetry of viruses. Classification of viruses. Steps of virus replication .

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Chapters 16 and 17

Nonspecific and Specific Defenses of the Host. Chapters 16 and 17. The Concept of Immunity. Susceptibility : lack of resistance to a disease Immunity : ability to fight off disease Innate immunity (nonspecific) : built in defenses against any pathogen

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Structure of Viruses

Structure of Viruses. Prepared By : Abdulrahman M. El-Sha'er Supervised By : DR. Abdelraouf Elmanama. SIZE & SHAPE. Viruses range from 20 to 300 nm in diameter; this corresponds roughly to a range of sizes from that of the

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Viral Infections of the Respiratory System

Viral Infections of the Respiratory System. Clinical manifestations. Common cold (rhinitis ) Pharyngitis Tonsilitis Sinusitis & otitis media Croup (acute laryngotracheobronchitis ) Acute bronchitis Acute bronchiolitis Viral pneumonia Influenza (Flu ).

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Review (V1) - The Hallmarks of Cancer

Review (V1) - The Hallmarks of Cancer. Robert A. Weinberg. Review (V1) - The Hallmarks of Cancer. Review (V1) - Number of somatic mutations in human cancers. Top: children vs. adults Numbers in parentheses : median number of nonsynonymous mutations per tumor.

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antigen

antigen. T Cell Antigen Specificity - a:b. Antigen determinant = epitope - Part of antigen that binds antigen receptor T cells with a:b TCR are specific for denatured or fragmented (peptides) forms of protein antigens which are linear determinants

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Virological Methods

Virological Methods. Viral infectivity : ~ Plaque forming unit (PFU), ~ Tissue culture 50% infective dose (TCID 50 ) Serology ( antibody response to the virus) Molecular methods ~ Polymerase chain reaction (PCR) Virus specific methods ~ Hemagglutination

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Junk DNA and DNA editing

Junk DNA and DNA editing. Shai Carmi Bar- Ilan , BU. ???"? ?"? ???? 17/05/2008. Genome structure. DNA has mostly evolved to store the code of the proteins its host cell is using. Thus, the main functional units of any genome are protein coding genes.

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What is a virus?

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Vaccines and Antivirals

Vaccines and Antivirals. Clinical Use of Interferon. Therefore they have been used in the treatment of cancers of various types. Alpha interferon has shown some effectiveness in the treatment of Hairy cell leukemia, chronic myelocytic leukemias, and some T-cell lymphomas.

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Influenza: Respiratory Virus

Influenza: Respiratory Virus. Do Now:. Important Characteristics. RNA virus H & N refer to different versions of viral proteins. ~100 nm (0.1 ? m) diameter. spherical. Transmission: Aerosol or hand-mouth. Step 1: Hemagglutinin Protein Binds to Epithelial Cell in Nose or Lungs.

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Virus = virion

1. Living characteristics of viruses: They reproduce at a fantastic rate, but only in living host cells. They can mutate. 2. Nonliving characteristics of viruses They are acellular , that is, they contain no cytoplasm or cellular organelles.

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The Fight Against Infectious Diseases

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Viruses

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B cell

Virus. Humoral Immunity. Extracellular antigen. Memory cell. +. Proliferation and differentiation of activated B cell. B cell. Plasma cell. Activates B cells that bind antigen. Antibodies bind antigen. Antibody production. Cellular Immunity. Activated macrophage.

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Viruses

Viruses. Small but deadly!. What Is A Virus?. Viruses do not fit in the six-kingdom system because they do not display most of the characteristics of living cells. Viruses can only live as parasites. They occupy a position between non-living and living. Virus Anatomy.

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Ch 27.1 and 27.2

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