 93</span>&#160;                                              <span class="stringliteral">&#39;PR&#39;</span>,  <span class="comment"># praseodymium ion</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;                                              <span class="stringliteral">&#39;BMA&#39;</span>,  <span class="comment"># beta-d-mannose</span></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;                                           