anchor.diff:    <tr>
       <td> <i>D. melanogaster</i> </td>
       <td> Affymetrix microarray-based atlas of gene expression in larval and adult tissues</td>
  -    <td> <a href="http://www.flyatlas.org" target="_new">FlyAtlas</a> - 25th June 2008 </td>
  +    <td> <a href="http://www.flyatlas.org" target="_new">FlyAtlas</a> - 24th February 2009 </td>
       <td> Chintapalli et al - <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Abstract&list_uids=17534367" target="_new">PubMed: 17534367</a></td>
       <td> &nbsp;</td>
     </tr>
  
positive.code:   <tr>
      <td> <i>S. cerevisiae</i> </td>
      <td> Gene versus publications</td>
      <td> <a href="http://www.ncbi.nlm.nih.gov" target="_new">NCBI</a> - 24th April 2009</td>
      <td> &nbsp;</td>
      <td> &nbsp;</td>
    </tr>
  
negative.code:   <tr>
      <td> <i>S. cerevisiae</i></td>
      <td> High-throughput yeast 2-hybrid protein interaction datasets </td>
      <td> <a href="http://www.ebi.ac.uk/intact" target="_new">IntAct</a> - 22nd April 2009</td>
      <td> Kerrien et al - <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Abstract&list_uids=17145710" target="_new">PubMed:17145710</a></td>
      <td> &nbsp;</td>
    </tr>
  