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The peptide's presence in nearly every cell type hints at its fundamental biological importance

doi: 10.1136/annrheumdis-2014-206258

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Why Stoichiometry Matters A name such as arginate does not necessarily tell a reader: How many arginine molecules are associated with each peptide Whether the arginine is present as a counterion or physical mixture Whether unbound arginine remains in the material Whether other counterions are also present Whether the stated quantity means peptide or total salt mass Those questions require a specification and suitable analytical evidence rather than a shortened product name