Template source: blast/blast_search.html

<div class="col-md-12 panel panel-primary">
    <div class="panel-body">
        <form id='form' action="/alignment/blastsearchresults" method="post" enctype="multipart/form-data"> {% csrf_token %}
            <input id="human" name="human" type="checkbox" value="human" /> Query human sequences only.
            <textarea name="input_seq" rows="15" cols="40"></textarea>
        </form>
    </div>
</div>