Sources

On this tab, it is possible to add information about how your polymeric molecules were made and the actual biological origin of each such molecule.  In the top frame, you can add and remove experimental source information.  If the molecule was made using recombinant techniques, you can also specify which organism was used and information about the strain and vector type and name.  If the molecule was chemically synthesised (other methods?) you can specify the organism as None???

In the bottom frame, you can add the biological source of each polymer, such as the organism type, the common and scientific names of the originating organism with the gene name that the polymer was derived from as well as strain and variant information.

The Sources tab.

The top frame is for experimental sources and the bottom frame is for biological sources.