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Thus, telomeres of young cells are longer than the telomeres of middle-aged cells which, in turn, are longer than the telomeres of old cells. When the telomeres become very short, the cell can no longer divide, and it dies. Along with telomeres that get shorter, older cells also suffer increasing damage to their DNA.
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Canada's “universal” health-care system is a little less universal when it comes to immigrants. All citizens and permanent residents are eligible for public health insurance, which covers most medical issues. Newcomers to Canada, however, may not have the same access to services.
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Drosophila biology: The common fruit fly is a model organism for genetic studies. The reason it is so widely used is because it is easily cultured in the lab, has a short generation time, and can produce many offspring. ... Larvae tissues degenerate and reorganize forming an adult fly inside the pupal case.
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