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Viruses

data and analyze factors

Using the Internet to gather statistical data and related background information on your chosen disease. Compile information on the following: Populations affected by the disease Historical outbreaks of the disease Typical progression of the disease discussing your findings and analyze factors

Hershey-Chase Experiment Proving DNA as the Genetic Material

Hershey and Chase intended to see if it's the viral DNA or the viral protein coat that enters bacteria upon infection with bacteriophage (virus infecting bacteria). By determining this they could tell which component of virus actually carries the genetic information and results in formation of more viruses with in the bacterium

Determination of the Titer of B-D-Galactosidase Using the ELISA

The purpose of the experiment that took place was to determine the titer of B-D-galactosidase using the enzyme-linked immunosorbent assay. given the results of the experiment, how do you determine the titer, and what do these results mean? The raw data (results obtained from the plate reader) are attached in the excel file. I fo

How retroviruses cause cancer

A number of tumors from inbred animals such as mice and chickens show associated retroviruses. How do you think they affect gene expression in these animals such that it results in cancer? Propose experiments to test your hypothesis.

HIV Pandemic

Human Immunodeficiency Virus (HIV) is described as being a pandemic already, but does this disease have the potential to explode into one of the greatest health care threats during this century

Foodborne Viral Infections

What species is the most common source of virus in foodborne disease and what measures might be taken to reduce the risk of viral transmission from this source?

Viral Foodborne Disease

1.) Which group of viruses is the most common cause of viral foodborne disease? Note: Most be a least 3 paragraphs and please site references used.

Shigella And Yersinia

1.) Discuss in some detail the set of effectors developed by Yersinia sp. To ensure their survival in the human host. Note: Please cite references

Salmonella

1.) What virulence factors are important in establishing a Salmonella infection? Note: Please make responses at least 3 paragraphs and cite references.

Bacteriophages and Lysogeny

I) Why might have virology developed more slowly without the use of Chamberland's porcelain filter? ii) How are viruses classified? Give a complete account of the characteristics used in this process? iii) Describe the lytic and lysogenic life cycles of a bacteriphages. Include in your answer comparisons a

Lymphatic System

Identify the organs of the immune system and their respective functions.

Parvovirus B19-Associated Conditions

2. Three siblings are exposed to Parvovirus B19, a virus that commonly infects children, infecting and destroying erythrocytes (RBCs) and in rare cases causes a transient anemia but usually is cleared with no long term affects. They responded as follows: -Brother #1, age 14, develops a high fever and general malaise 8 days a

switching from Th1 to Th2 responses

This solutions describes circumstances where it may be desirable to convert a patients' CD4 T cell response from a Th1-dominated to a Th2-dominated response or vice versa. The solution describes, using examples, diseases associated with these responses, and why each type of immune response may be damaging to the host.

Designing antiviral drugs

Antiviral drugs must be designed in a different way to that used for antibiotics or other anti-infective agents. This solution details the considerations that must be taken into account when developing antiviral drugs, and gives examples of different classes of antivirals.

Koch's Postulates and Molecular Genetics

I understand that Koch's postulates have limitations, but I don't understand how that plays a role in molecular genetics. Here is my question. Given the limitations of Koch's postulates, what role do you see for molecular genetics and associated techniques in addressing the exceptions to the postulates?

How does the immune system sense the presence of a pathogen?

Please help with the following problem. Provide a short explanation, in at least 100 words. The immune system must be able to ignore normal human proteins, but be able to rapidly respond to infectious agents. Please give details about how the immune system can make this discrimination, which leads to the development of an i

Eight AIDS/HIV related questions and answers.

11. What are the characteristics of a long term non-progressive (LNTP)? 12. Antibodies are produced by ___ cells of the immune system. 13. What is the "incubation period" for HIV? 14. What opportunistic infection (O.I.) causes blindness? 15. If a person has a negative test for HIV how many months should he/she wait for a ret