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</html><thumbnail_url>https://quebecnaturopath.com/articles/wp-content/uploads/2022/01/compounds.jpg</thumbnail_url><thumbnail_width>760</thumbnail_width><thumbnail_height>607</thumbnail_height><description>&nbsp; Durant de nombreuses ann&#xE9;es, l&#x2019;on utilisait donc un syst&#xE8;me d&#x2019;&#xE9;quivalences dans lequel une unit&#xE9; internationale (UI) &#xE9;tait &#xE9;gale &#xE0; 0,3 &#xB5;g de r&#xE9;tinol (environ 1 nanomole [ou en abr&#xE9;g&#xE9; &#xAB; nmol &#xBB;]), 0,6 &#xB5;g de &#x3B2;-carot&#xE8;ne ou 1,2 &#xB5;g d&#x2019;autres carot&#xE9;no&#xEF;des de la provitamine A. Cette relation est exprim&#xE9;e alternativement par l&#x2019;&#xE9;quivalent r&#xE9;tinol (ER) [&hellip;]</description></oembed>
