class="n">cell_type</span><span class="o">=</span><span class="s1">&#39;THP-1&#39;</span><span class="p">,</span> <span class="n">folder</span><span class="o">=</span><span class="n">dir_</span><span class="p">)</span>
</pre></div>
</div>
<p>We will use the first volume</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">cell_volume</span> <span class="o">=</span> <span class="n">volumes</span><span class="p">[</span><span class="mi">0</span><span class="p