anchor.diff:  			<td class="label">
   				<c:choose>
   					<c:when test="${canUserUpdateParticle eq 'true'}">
  -						<html:text property="dendrimer.branch" />
  +						<html:select property="dendrimer.branch">
  +							<option value=""></option>
  +							<html:options name="allDendrimerBranches" />
  +							<option value="Other">
  +								Other
  +							</option>
  +						</html:select>
   					</c:when>
   					<c:otherwise>
   						${nanoparticleCompositionForm.map.dendrimer.branch}&nbsp;
   					</c:otherwise>
   				</c:choose>
   			</td>
  -
  +			<td class="label">
  +				<strong>Other Branch</strong>
  +			</td>
  +			<td class="label">
  +				<c:choose>
  +					<c:when test="${canUserUpdateParticle eq 'true'}">
  +						<html:text property="dendrimer.otherBranch" />
  +					</c:when>
  +					<c:otherwise>
  +						&nbsp;
  +					</c:otherwise>
  +				</c:choose>
  +			</td>
   			<td class="label">
   				<strong>Repeat Unit</strong>
   			</td>
  
positive.code: 				</c:choose>
  
  			</td>
  			<td class="rightLabel" colspan="2">&nbsp;
  				<c:choose>
  					<c:when test="${canUserUpdateParticle eq 'true'}">
  						<input type="button" onclick="javascript:updateComposition()" value="Update Surface Groups">
  
negative.code: 			<td class="label">
  				<c:choose>
  					<c:when test="${canUserUpdateParticle eq 'true'}">
  						<html:select property="dendrimer.generation">
  							<option value=""></option>
  							<html:options name="allDendrimerGenerations" />
  							<option value="Other">
  								Other
  							</option>
  						</html:select>
  					</c:when>
  					<c:otherwise>
  						${nanoparticleCompositionForm.map.dendrimer.generation}&nbsp;
  					</c:otherwise>
  				</c:choose>
  			</td>
  			<td class="label">
  				<strong>Other Generation</strong>
  			</td>
  			<td class="label">
  				<c:choose>
  					<c:when test="${canUserUpdateParticle eq 'true'}">
  						<html:text property="dendrimer.otherGeneration" />
  					</c:when>
  					<c:otherwise>
  						&nbsp;
  					</c:otherwise>
  				</c:choose>
  			</td>
  
  			<td class="label">
  				<strong>Molecular Formula</strong>
  			</td>
  