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Results 1 - 2 of 2 for Billion
  1. Nearsightedness 
    ... third of the world population, about 2.6 billion people, will have myopia. Almost 400 million of ...
    https://medlineplus.gov/genetics/condition/nearsightedness - Genetics
  2. What is DNA?: MedlinePlus Genetics 
    ... thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those ...
    https://medlineplus.gov/genetics/understanding/basics/dna - Genetics