/span><span class="op">(</span><span class="va">meta.file</span><span class="op">)</span><span class="op">)</span></code></pre></div>
<p>Merge into a single matrix</p>
<div class="sourceCode" id="cb2"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span class="co"># keep only kidney cells</span>
<span class="va">E</span> <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/lapply.html">lapply</a></span><span class="op">(</span><span class="va">E</span>, <span class="kw">