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<p><b>Atrial natriuretic peptide</b> (<b>natriuretic polypeptide</b> (<b>ANP</b>) or <b>atrial natriuretic factor</b> (<b>ANF</b>) is a natriuretic peptide hormone secreted from the <a href="page.php?w=Atrium_%28heart%29">cardiac atria</a> that in humans is encoded by the NPPA <a href="page.php?w=gene">gene</a>. Natriuretic peptides (ANP, <a href="page.php?w=Brain_natriuretic_peptide">BNP</a>, and <a href="page.php?w=Natriuretic_peptide_precursor_C">CNP</a>) are a family of hormone/paracrine factors that are structurally related. The main function</p><p>
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