Worm in situ hybridization technique wanted

[J Singer]

I am considering a project involving isolating homologs of several 
Drosophila genes from another invertebrate. I would particularly like to 
examine their expression by in situ hybridization. Can anyone suggest a 
good (or, even, not so good) protocol for use on nematodes, Planaria or 
another wormlike animal? Please mail me (these aren't groups I normally 
read), and thank you very much for your help.
Jonathan Singer
Judith Lengyel lab (UCLA)