A simple diagram of a spherical virus, labelled with numbers.
<p>It shows the DNA/RNA, envelope and protein coat.
</p><p>The numbers do not start a 1, this is to match the numbering on others in the series.
</p>
<ol start="12"><li>DNA or RNA</li>
<li>Envelope</li>
<li>Protein coat</li>
</ol>
<a href="//commons.wikimedia.org/wiki/User:Domdomegg" title="User:Domdomegg">domdomegg</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>