Have you tried embedding the tissue in gelatin - Agar-agar? Szilvi Mezey Szilvia Mezey PhD student Semmelweis University Dept. of Anatomy, Histology and Embryology Tuzolto u. 58. Budapest, 1094, Hungary T.: +36-12156920/3687 F.: +36-12155158 E-mail: mezey <@t> ana.sote.hu