comment">##              This way, one can define a more or less accurate zone </span>
<a name="l00034"></a>00034 <span class="comment">##              of interaction between the ligand and the protein. </span>
<a name="l00035"></a>00035 <span class="comment">##              Descriptors are then calculated using alpha spheres </span>
<a name="l00036"></a>00036 <span class="comment">##              retained and contacted atoms.</span>
<a name="l00037"></a>00037 <span class="comment">##</span>
<a name="l00038