Okay, here's a reference from Boehringer Mannheim's catalog on the DIG
system, dunno if you have it or not....
Manoukian, A.S., Krause, H.M. (1992). Concentration-Dependent Activities
of the Even Skipped Protein in Drosophila Embryos. Genes and Development
They are from the Banting and Best Institute here in Toronto.
They studied whole-mount Drosophila probed for ftz mRNA with a
University Of Toronto
nwinegar at credit.erin.utoronto.ca