I find that it is not easy to cut bone tissue section. If you have some experience, I hope that you can give me some advice! Thank you very much! Qian --------------------------------- Do You Yahoo!? ×¢²áÊÀ½çÒ»Á÷Æ·ÖʵÄÑÅ»¢Ãâ·ÑµçÓÊ