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1. What is the purpose of positive selection during T-cell development? How are positive selection and MHC restriction related?
2. During B-cell activation some activated B-cells undergo differentiation into antibody secreting plasma cells outside of the germinal center and therefore never go through the germinal center responses. Other activated B-cells will return to the follicle forming a germinal center and undergo processes that alter the antibody that will be produced.
Describe the germinal center responses. Why are these responses important (hint: what is different about the antibody produced)? Why are T cells important in germinal center responses?
Determine the probability of rolling one six sided die and obtaining the following numbers?
Care must be taken in the use of succinylcholine because some individuals have an adverse reaction. In most cases, the patient recovers from the succinylcholine paralysis after a short time. In cases with sensitive patients, the individual recovers a..
Fred and Ethel have normally pigmented skin but they have a child who is an albino. They are carriers of a recessive trait = heterozygotes. STOP - READ THAT LAST SENTENCE AGAIN - YOU ARE GOING TO NEED IT TO ANSWER THE SECOND QUESTION. Use A or a ..
What are the ecological effects of herbivores on plants? Why is the world green? A complete answer to this question would include all of the processes that limit herbivore growth.
How does research influence health policy decisions? What are the facilitating factors and barriers to the use of research in policy
Null hypothesis for autosomal dominant, autosomal recessive, sex-linked dominant and sex-linked recessive of the mendelian genetics on Drosophila melanogaster
Using the ideal gas law, determine the Temperature of the gas in Celsius the volume is 20,440.0 liters and a pressure of 1 atmosphere
When we graph the CFUs/ml and absorbance on the same graph, we would hope to see an upward trend for both. Sometimes the absorbance continues to rise after the CFUs/ml level off into the maximum stationary phase. What would be the cause of that?
1. What was the general attitude of the people and the government of the US during the 1800's towards nature? What specific acts were put in place to exemplify this attitude? What is the manifest destiny?
In an attempt to map a newly discovered mutation that may contribute to autism a study was made of a small, isolated population on west coast of Black Sea.
The albedo of Earth's surface is impacted by what covers the surface. Suppose Location A is covered by trees, Location B is covered by snow
Calculate the number of grams of AlCl3 produced from 2.75 mol Cl2. Show your work.
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