anchor.diff:                              </table>
                           </div>
                       </div>
  -
  -                    <p>Each IMPC gene knockout strain is assessed for viability by examination of litters produced from
  -                        mating heterozygous animals. A strain is declared lethal if no homozygous nulls pups are
  -                        detected at weaning age. A strain is declared subviable if homozygous null pups constitute less
  -                        than 12.5% of the litter. For lethal strains, embryos are phenotyped in the embryonic and
  -                        perinatal lethal pipeline. For embryonic lethal and subviable strains, heterozygotes are
  -                        phenotyped in the IMPC adult phenotyping pipeline.</p>
  -
                   </div>
               </div>
   
  
positive.code: 
                          </p>
                          <p>
                              Read more in our paper on <a href="https://europepmc.org/article/PMC/5295821">High-throughput
                              discovery of novel developmental phenotypes, Nature 2016.</a>
                          </p>
                      </div>
                      <h2>Accessing Embryo Phenotype Data</h2>
                      <div class="row mb-3">
                          <p>
                              Embryo phenotype data can be accessed through the <a href="${baseUrl}/embryo_heatmap">Embryo
                              Viewer</a>, or via our FTP site or REST API (see the documentation <a
                                  href="${cmsBaseUrl}/help/data-access/">here</a>). In addition, an <a
                                  href="${baseUrl}/embryo/vignettes">Embryo Vignettes page</a> provides a glimpse into
                              available data.
                          </p>
                      </div>
                      <h2>Determining Lethal Lines</h2>
                      <div class="row mb-3">
  
negative.code:                             lethal and subviable strains, heterozygotes are phenotyped in the IMPC <a
                                  href="${cmsBaseUrl}/impress">adult phenotyping
                              pipeline</a>.
                          </p>
                      </div>
                      <div class="row mb-5">
  