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Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

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The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..

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Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..

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DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..