diff --git a/db.sqlite3 b/db.sqlite3
index fab2c1b..733e1f2 100644
Binary files a/db.sqlite3 and b/db.sqlite3 differ
diff --git a/three_d_viewer/templates/three_d_viewer/sampletree.html b/three_d_viewer/templates/three_d_viewer/sampletree.html
index 8b18aa0..73c2feb 100644
--- a/three_d_viewer/templates/three_d_viewer/sampletree.html
+++ b/three_d_viewer/templates/three_d_viewer/sampletree.html
@@ -12,13 +12,7 @@
         <ul>
             <ul class="nav nav-list tree">
                 {% for category in parent_categories %}
-                    <li><label class="tree-toggle nav-header">{{ category.name }}</label>
-                        <ul class="nav nav-list tree">
-                            {% for sample in category.samples.all %}
-                                <li><a href="{% url 'three_d_viewer:detail' sample.id %}">{{ sample.name }}</a></li>
-                            {% endfor %}
-                        </ul>
-                    </li>
+                    {% include "three_d_viewer/treenode.html" %}
                 {% endfor %}
             </ul>
         </ul>
diff --git a/three_d_viewer/templates/three_d_viewer/treenode.html b/three_d_viewer/templates/three_d_viewer/treenode.html
new file mode 100644
index 0000000..2399ada
--- /dev/null
+++ b/three_d_viewer/templates/three_d_viewer/treenode.html
@@ -0,0 +1,14 @@
+<li><label class="tree-toggle nav-header">{{ category.name }}</label>
+    <ul class="nav nav-list tree">
+    {% for child in category.children.all %}
+        {% with category=child template_name="three_d_viewer/treenode.html" %}
+            <ul style="list-style: none;">
+                {% include template_name %}
+            </ul>
+        {%endwith%}
+    {% endfor %}
+    {% for sample in category.samples.all %}
+            <li><a href="{% url 'three_d_viewer:detail' sample.id %}">{{ sample.name }}</a></li>
+    {% endfor %}
+    </ul>
+</li>
\ No newline at end of file