mask]

    if verbose:
        n_genes_org = len(df)
        n_genes_filtered = len(df_filtered)
        td = datetime.timedelta(seconds=(time.time() - start))
        print(&#34;excluded %d / %d genes in %d min %d sec&#34; % ((n_genes_org - n_genes_filtered), n_genes_org, *divmod(td.seconds, 60)))

    return df_filtered</code></pre>
</details>
</section>
<section>
</section>
<section>
</section>
<section>
<h2 class="section-title" id="header-functions">Functions</h2>
<dl>
<dt id="cellex.preprocessing.remo