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The protocol for a nonclinical laboratory study must contain a

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The protocol for a nonclinical laboratory study must contain all of the following EXCEPT ________________________. Question options: - the species, strain, and age of the test system - the dated signature of the sponsor representative - a description of the methods for the control of bias - the type and frequency of tests and measurements

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The protocol for a nonclinical laboratory study must contain all of the following EXCEPT ________________________. Question options: - the species, strain, and age of the test system - the dated signature of the sponsor representative - a description of the methods for the control of bias - the type and frequency of tests and measurements

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Deinococcus radiodurans, which the Guinness Book of World Records has dubbed the world's toughest bacterium, can tolerate doses of ionizing radiation

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Question 2

Infectious Disease - Polio Characterization of etiologic agent: The etiologic agent of polio is the poliovirus, which belongs to the family Picornaviridae. It is a small, non-enveloped, single-stranded RNA virus. Life cycle or infectious cycle: The poliovirus enters the body through the oral route, primarily via contaminated food or water. It then replicates in the gastrointestinal tract, specifically in the lymphoid tissue of the tonsils and Peyer's patches. From there, it spreads to the bloodstream and can invade the central nervous system, causing paralysis. Diagnosis: Polio can be diagnosed through laboratory tests, including the isolation and identification of the poliovirus from stool samples or throat swabs. Serological tests can also detect antibodies against the virus in the blood. Epidemiology: Polio is a highly contagious disease that mainly affects children under the age of 5. It is more prevalent in areas with poor sanitation and limited access to clean water. The disease has been eradicated in many countries through widespread vaccination efforts. Symptoms: The majority of polio infections are asymptomatic or result in mild flu-like symptoms. However, in a small percentage of cases, the virus invades the central nervous system, leading to muscle weakness, paralysis, and, in severe cases, respiratory failure. Mechanism of Pathogenicity/immune response/immune evasion: The poliovirus primarily targets motor neurons in the spinal cord, leading to muscle weakness and paralysis. It evades the immune response by rapidly replicating and spreading within the body, and by inhibiting the production of interferons, which are important antiviral proteins. Treatment: There is no specific antiviral treatment for polio. Supportive care, including pain management, physical therapy, and respiratory support, is provided to affected individuals. Vaccination is the most effective way to prevent polio. Current status: Thanks to global vaccination efforts, polio cases have significantly decreased worldwide. The disease remains endemic in only a few countries, including Afghanistan and Pakistan. The World Health Organization (WHO) aims to eradicate polio completely through continued vaccination campaigns. Your opinion of the Future of this disease: With ongoing vaccination efforts and global cooperation, the future of polio looks promising. Eradicating the disease entirely is an achievable goal, but it requires sustained commitment and resources. Any reference: Please refer to the World Health Organization (WHO) website for more information on polio and its eradication efforts.

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Question Text	The protocol for a nonclinical laboratory study must contain all of the following EXCEPT ________________________. Question options: - the species, strain, and age of the test system - the dated signature of the sponsor representative - a description of the methods for the control of bias - the type and frequency of tests and measurements
Topic	All topics
Subject	Biology
Class	Class 11

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