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Thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer
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Hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells
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The 20th letter of the Roman alphabet
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A unit of weight equivalent to 1000 kilograms
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One of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
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A base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine