I've been working on making RNA in situ hybridization work on worm larvae, particularly L3s and L4s. If anyone has any advice to share, please send it my way. I'll post a summary of the responses. Thanks, Jill Bettinger jillb at biosci.cbs.umn.edu 250 Biosciences 1445 Gortner Ave. St. Paul, MN 55108 phone: (612) 625 3161 fax: (612) 625 5754