Gabriel

request.Preferences.promoter should be left undefined or blank, if T7 promoter checkbox is unchecked. Otherwise, it should be TAATACGACTCACTATAGGG

The InVivoOrganism parameter has replaced the Promoter parameter in the construction of the request. 
Mouse should map to "mouse (taxid:10090)"
rat (taxid:10114)
Daphnia (taxid:6668)
human (taxid:9606)
A custom organism box could be specified. 
These values come from
[url]http://blast.ncbi.nlm.nih.gov/Blast.cgi?PROGRAM=blastn&BLAST_PROGRAMS=megaBlast&PAGE_TYPE=BlastSearch[/url]