anti-sense. The antithesis of sense.

I have just spent several days designing primers to amplify bits of DNA from wheat genomic DNA. Lots of days looking at AGTCGTCGTAA and other such sequences.
Now I've just realised that I want the antisense sequence so I have to start all over again.
AAARRGGGGGHHHHHHH
(or should it be AAATTGGGGGCCCCCCC?)

PS this post is unlikely to make sense to any non-molecular biologists. But I'm happy to share the bewilderment.