Virus PowerPoint
... other areas. Two cows have been found with the illness in the United States. • The human form of the illness is called variant Creutzfeld-Jakob disease and is believed to have originated from eating infected beef. It has killed about 180 people worldwide. Symptoms can take years to ...
... other areas. Two cows have been found with the illness in the United States. • The human form of the illness is called variant Creutzfeld-Jakob disease and is believed to have originated from eating infected beef. It has killed about 180 people worldwide. Symptoms can take years to ...
MYXOVIRUSES
... usually given in the fall, for the protection to be high in December & January Given every year as protection is short lived, and also as the most effective strains for the vaccine will change due to shift or drift ...
... usually given in the fall, for the protection to be high in December & January Given every year as protection is short lived, and also as the most effective strains for the vaccine will change due to shift or drift ...
Crimean-Congo hemorrhagic fever virus
... disease, caused by domestic and wild animals Virus circulates in the body of an infected animal up to 1 week. Clinical disease is rare in infected animals but symptoms could be severe in infected humans. ...
... disease, caused by domestic and wild animals Virus circulates in the body of an infected animal up to 1 week. Clinical disease is rare in infected animals but symptoms could be severe in infected humans. ...
Viruses
... * Some have viral envelopes that cloak their capsids. * Viruses are obligate intracellular parasites; can reproduce only w/in a host cell * They lack enzymes for metabolism or ribosomes for protein production *Bacteriophage- Virus that attacks a bacterial cell (also called a phage) Host specificity- ...
... * Some have viral envelopes that cloak their capsids. * Viruses are obligate intracellular parasites; can reproduce only w/in a host cell * They lack enzymes for metabolism or ribosomes for protein production *Bacteriophage- Virus that attacks a bacterial cell (also called a phage) Host specificity- ...
Slide 1
... • Although it requires only a single virion to initiate an infectious cycle, not all virions are equally infectious. • Virus infectivity is measured by the plaque assay. • Plaques are clear zones that develop on lawns of host cells. • Theoretically, each plaque is due to infection by a single virus ...
... • Although it requires only a single virion to initiate an infectious cycle, not all virions are equally infectious. • Virus infectivity is measured by the plaque assay. • Plaques are clear zones that develop on lawns of host cells. • Theoretically, each plaque is due to infection by a single virus ...
Viruses Lecture 1
... Ebola – filamentous form – 60-80nm in diameter, on average 1000 nm long (but highly variable) Chickenpox virus Polio Virus Influenza virus HIV virus Hepatitis – this one actually Hepatits B magnified 120,000X Foot and Mouth disease – 1967 outbreak in the UK saw the destruction of 400,000 animals Vir ...
... Ebola – filamentous form – 60-80nm in diameter, on average 1000 nm long (but highly variable) Chickenpox virus Polio Virus Influenza virus HIV virus Hepatitis – this one actually Hepatits B magnified 120,000X Foot and Mouth disease – 1967 outbreak in the UK saw the destruction of 400,000 animals Vir ...
Lecture 16: Spherical Virus Structures
... shell with icosahedral symmetry is therefore equal to 60. >> Since there are 20 faces and each face has three subunits the total number of subunits is 3 x 20 = 60 ...
... shell with icosahedral symmetry is therefore equal to 60. >> Since there are 20 faces and each face has three subunits the total number of subunits is 3 x 20 = 60 ...
File
... 67. How does your circulatory and respiratory systems work together to maintain homeostasis? Respiratory system takes in oxygen and releases carbon dioxide that it takes from you circulatory system. ...
... 67. How does your circulatory and respiratory systems work together to maintain homeostasis? Respiratory system takes in oxygen and releases carbon dioxide that it takes from you circulatory system. ...
Chapter 25
... cause 1/3 of all viral gastroenteritis cases • Transmitted by fecal-oral route • Infection in all ages at any time of year • Acute onset, nausea, vomiting, cramps, diarrhea, chills • Rapid and complete recovery, but virus may be shed for ~ 10 days! ...
... cause 1/3 of all viral gastroenteritis cases • Transmitted by fecal-oral route • Infection in all ages at any time of year • Acute onset, nausea, vomiting, cramps, diarrhea, chills • Rapid and complete recovery, but virus may be shed for ~ 10 days! ...
(1) Replication of negative ssRNA viruses
... 1-Medically important negative-strand RNA viruses 2- They are all enveloped; . 3-Their virions contain an RNA-dependent RNA polymerase (transcriptase) that synthesizes viral mRNAs using the genomic the genomic negative-strand viral negative-strand RNA as a template RNAs are not infectious, 4- Some n ...
... 1-Medically important negative-strand RNA viruses 2- They are all enveloped; . 3-Their virions contain an RNA-dependent RNA polymerase (transcriptase) that synthesizes viral mRNAs using the genomic the genomic negative-strand viral negative-strand RNA as a template RNAs are not infectious, 4- Some n ...
Antiviral Drugs
... – N is neuraminidase which must remove terminal sialic acid residues from glycoproteins or new virions will attach on way out, get stuck. –Drugs inhibit neuraminidase; don’t stop viral replication, but prevent viral spread. ...
... – N is neuraminidase which must remove terminal sialic acid residues from glycoproteins or new virions will attach on way out, get stuck. –Drugs inhibit neuraminidase; don’t stop viral replication, but prevent viral spread. ...
PART FIVE: QUESTIONS 21-25
... The hard rubbery coating around the virus, which forms in colder temperatures, gives it the protection it needs to pass from person to person. The coating is so robust it can even resist to certain detergents. However, once inside a host the virus can only infect a target cell once the coating has m ...
... The hard rubbery coating around the virus, which forms in colder temperatures, gives it the protection it needs to pass from person to person. The coating is so robust it can even resist to certain detergents. However, once inside a host the virus can only infect a target cell once the coating has m ...
virus
... Either single-stranded or double-stranded DNA or RNA - linear, closed circle, or able to assume either shape. Reproduce only within living cells Virion All viruses have a nucleocapsid composed of a nucleic acid surrounded by a protein capsid that may be icosahedral, helical, or complex in structure. ...
... Either single-stranded or double-stranded DNA or RNA - linear, closed circle, or able to assume either shape. Reproduce only within living cells Virion All viruses have a nucleocapsid composed of a nucleic acid surrounded by a protein capsid that may be icosahedral, helical, or complex in structure. ...
Viral Structure
... Same disease may be caused by a variety of different viruses Same virus may cause a variety of diseases Outcome of infection determined by the interaction of the virus and the host o Virus strain o Route of infection o Infectious dose o Host immune status o Host genetics o Virus cytotoxicity o Immun ...
... Same disease may be caused by a variety of different viruses Same virus may cause a variety of diseases Outcome of infection determined by the interaction of the virus and the host o Virus strain o Route of infection o Infectious dose o Host immune status o Host genetics o Virus cytotoxicity o Immun ...
Viral Plant Pathogens
... of these two basic structures. Plant viruses differ also in the virus simplicity of their chemical composition, movement within the host, symptoms they produce, methods of infection, replication and dissemination. Often viruses reside in ...
... of these two basic structures. Plant viruses differ also in the virus simplicity of their chemical composition, movement within the host, symptoms they produce, methods of infection, replication and dissemination. Often viruses reside in ...
virus4
... • Michael Bishop and Harold Varmus received the 1989 Nobel Prize for cancercausing genes carried by a virus from animal cells • Oncogenes:genes that can be transformed to cause cancer • 10% of cancers have been found to be due to oncogenic viruses ...
... • Michael Bishop and Harold Varmus received the 1989 Nobel Prize for cancercausing genes carried by a virus from animal cells • Oncogenes:genes that can be transformed to cause cancer • 10% of cancers have been found to be due to oncogenic viruses ...
Case Study- HIV (Answers)
... If a helper T cell divides and viral DNA has been incorporated into the cell’s genome, it will also be replicated and be present in both of the daughter cells. HIV can stay dormant for many years before symptoms are exhibited in its carrier, therefore, an individual can be infected with HIV but not ...
... If a helper T cell divides and viral DNA has been incorporated into the cell’s genome, it will also be replicated and be present in both of the daughter cells. HIV can stay dormant for many years before symptoms are exhibited in its carrier, therefore, an individual can be infected with HIV but not ...
Lecture 3
... After the viral nucleic acid is released inside the host cell: • The transcription and translation processes of the host cell are redirected for the production of viral proteins and nucleic acids The different types of nucleic acid genomes are expressed and replicated in several ways: DNA genom ...
... After the viral nucleic acid is released inside the host cell: • The transcription and translation processes of the host cell are redirected for the production of viral proteins and nucleic acids The different types of nucleic acid genomes are expressed and replicated in several ways: DNA genom ...
Viruses & Bacteria
... Comes from food and drink with contaminated feces. Can destroy your liver. ...
... Comes from food and drink with contaminated feces. Can destroy your liver. ...
6 Viruses and Other Acellular Infectious Agents
... 1. Envelopes are membrane structures surrounding some (but not all) viruses a. Lipids and carbohydrates are usually derived from the host membranes b. Proteins are virus-specific c. Many have protruding glycoprotein spikes (peplomers) such as the enzymes neuraminidase and hemagglutinin 2. Although v ...
... 1. Envelopes are membrane structures surrounding some (but not all) viruses a. Lipids and carbohydrates are usually derived from the host membranes b. Proteins are virus-specific c. Many have protruding glycoprotein spikes (peplomers) such as the enzymes neuraminidase and hemagglutinin 2. Although v ...
Cancer - is it merely a nutrient deficiency disease
... other areas. There are several theories about causes of cancer, some causes and risk factors are known – such as UV rays inducing melanoma. Some scientists implicate ‘viruses’, but is it the virus or unresolved chronic inflammation (maybe caused by an infective organism) to blame, after all UV rays ...
... other areas. There are several theories about causes of cancer, some causes and risk factors are known – such as UV rays inducing melanoma. Some scientists implicate ‘viruses’, but is it the virus or unresolved chronic inflammation (maybe caused by an infective organism) to blame, after all UV rays ...