RNA modifications are changes to the chemical composition of ribonucleic acid (RNA) molecules post-synthesis that have the potential to alter function or stability. An example of RNA modification is ...

Chemical modification describes the modification, addition or removal, through chemical reaction, of any of a variety of macromolecules, including proteins and nucleic acids. It refers to the use of ...

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The IRS issued the proposed regulations to reflect changes made by H.R. 1 to the threshold for backup withholding for third-party settlement organizations such as PayPal, Venmo, and others.