Hi all, I just wanted to thank everyone for your responses regarding fixation of the frozen tissues into formalin! I'll let you know how the staining turns out. Angela Angela McNabola MS, HT(ASCP)SLS, QIHC Scientist Bayer Helathcare 400 Morgan Lane West Haven, CT 06516 203-812-5001 angela.mcnabola.b <@t> bayer.com