I have some studies on in stu hybridization in cryosection or paraffin section but not in cultured cells. I have searched and find some protocols but I could not imagine how to do. It is not clear for me. Especially cultivation step before and after is described like first seeding of cells on poly-L-lysine coated microscopic slides and next incubation. At this point I think some petri dishes should be used for keeping slides in sterile condition and handle it easly. It seems complicated. I hope any body has such kind of experience and give me some advice. Thank you.