mouse genome and markers

[Katrin Ausmeier]

Hi, 
I'm a student in a lab in germany working on a mouse mutation called Fused
toes. The mutation is characterized by a large deletion of the genomic DNA
on chromosome 8 in region D. I would like to determine the size of the
deleted region by checking some genomic markers. (The maximum size of the
deletion should be 1000 kb, because I could not observe changes in the
chromosome structure.)
Is there anyone who can explain me which markers I could use in my
experiments??? 
Regards
Katrin Ausmeier