[Genome] one question

[Kang (Alex) Chen]

Hi,
This is Alex from MMCRI(Maine Medical center Research Institute).I want
to establish a plasmid with Nkx2.5 promoter and i search it on your
website.Sequence Retrieval Region Options:  Promoter/Upstream by XXXX
bases. How could i get the correct information about the exact promoter
sequence since there are too much or too less sequence according to my
choose.
Thanks