anchor.diff:                  </c:forEach>
                   -->
   
  -                <c:if test="${ef==null}">
  +                <c:if test="${empty ef}">
                       <div style="padding-left:0px; font-size:10px;">
                          <c:choose>
                              <c:when test="${experimentalFactor.name != 'organism_part'}">
  
positive.code:         </c:if>
  
          <td style="vertical-align:top; padding-right:20px;">
              <c:if test="${ef==null}">
                  <div class="geneAnnotHeader"
                       style="width:200px;">${f:escapeXml(atlasProperties.curatedEfs[experimentalFactor.name])}</div>
              </c:if>
              studied in
              <c:forEach var="experiment" items="${experimentalFactor.experiments}" varStatus="i_e">
                  <c:if test="${(i_e.index<5)||(ef!=null)}">
                      <a href="${pageContext.request.contextPath}/experiment/${experiment}/${atlasGene.geneIdentifier}"
                         title="${experiment}">${experiment}</a><c:if test="${!i_e.last}">, </c:if>
                  </c:if>
                  <c:if test="${i_e.last}">
                      <c:if test="${(i_e.count>=5)&&(ef==null)}">
                          ... (${i_e.count} experiments)
                      </c:if>
                  </c:if>
  
negative.code: 
  
                  <div style="padding-left:0px">
                      <c:if test="${(experimentalFactor.moreValuesCount>0)&&(empty ef)}">
                          ${experimentalFactor.moreValuesCount} more value(s).
                      </c:if>
                      <c:if test="${empty ef}">
                          <div style="font-size:10px;">
                              <a href="${pageContext.request.contextPath}/gene/${atlasGene.geneIdentifier}?ef=${experimentalFactor.name}">show
                                  this factor only&gt;&gt;</a>
  