<li>A unit of <a title="mass" href="/wiki/mass"><font color="#0645ad">mass</font></a> equal to 0.000&nbsp;000&nbsp;000&nbsp;001 <a title="gram" href="/wiki/gram"><font color="#0645ad">grams</font></a>. Symbol: <a title="pg" href="/wiki/pg"><font color="#0645ad">pg</font></a></li>

</ol>