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～ a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
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～ any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
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～ the 1st letter of the Roman alphabet
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～ (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
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～ the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps"
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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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～ the blood group whose red cells carry the A antigen
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～ den sjette tone i en C-dur-skala
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～ det første bogstav i den danske version af det lat ...
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～ the Israeli military intelligence which produces comprehensive national intelligence briefings for the prime minister and the cabinet