Additional qualifier for a taxonomic identification naming, for example, a locus, cell, or cell-group
This attribute works in conjunction with the @taxonomic-id attribute also associated with the <ext-link> element. The @taxonomic-id attribute provides basic taxonomic information, such as a genus name; where present, the @taxonomic-id attribute supplements this taxonomic information by naming a particular cell-group or locus.
|Text, numbers, or special characters||The name of a taxonomic qualifier, such as a cell-group|
|Restriction: This attribute may be specified if the element is used.|