At one time, when we were using knives (not disposable blades), and we were using a roller plate, I found that the Shandon (now Thermo Scientific) M1 Embedding Matrix: http://www.thermo.com/com/cda/product/detail/1,1055,21902,00.html appeared to cause less rolling than OCT. You could try that. (However, now my lab is now using OCT, with disposable blades, without a roller plate, and they are not having difficulties cutting rat brains.)
Another thing to check is to make sure all the settings are correct, as in previous responses: temperature, thickness, etc. Also, be sure that the knife angle is adjusted perfectly for your tissue and your temperature. Subtle changes in angle can help sectioning in many ways. Finally, if static electricity is a problem, you can try removing gloves (if you are not trying to be RNase free). Gloves can sometimes, depending on the type, increase static. Best, Sarah _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet
