     <td><a href="Topic_11.html" target="_blank">21</a></td>
      <td>0</td>
    </tr>
    <tr>
      <th>t12</th>
      <td>rats, exposed, exposure, male, hamsters, 200, female, exposed_to, ADA, ppm</td>
      <td><a href="Topic_12.html" target="_blank">17</a></td>
      <td>0</td>
    </tr>
    <tr>
      <th>t13</th>
      <td>patients, bats, children, SARS, onset, cov, niv, volunteers, rinse, rhesus</td>
      <td><a href="Topic_13.html" target="_blank">27</a></td>
      <td>0</td>
    </tr>
    <tr>
 