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RNA
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  • Retroviruses actually referred to a particular class of virus, the HIV virus being the most well known, that were simple chunks of DNA or RNA.†   (source)
  • The capsule contains one or more strands of DNA or RNA, which are long molecules that contain the software program for making a copy of the virus.†   (source)
  • The earth's primordial ocean, which came into existence not long after the earth was formed, about four and a half billion years ago, may well have contained microscopic life forms based on RNA.†   (source)
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