目前,制作组织切片所用切片刀有三种,即钢刀、钻石刀和玻璃刀。钢刀不能切半薄切片和塑料包埋的组织块;钻石刀虽能切各种厚度的切片,但因价格昂贵而未能推广和普及。目前电镜制样用的三角玻璃刀,刃口长度为5～6毫米。这种刀虽能切厚度<0.1微米的超薄切片和厚度0.1～2微米的半薄切片,但不能切大片。1976年 Bennett Currently, there are three types of slicing knives used to make tissue sections: steel knives, diamond knives and glass knives. Steel knife can not cut semi-thin slices and plastic embedded tissue blocks; although the diamond knife can cut a variety of thickness slices, but because of the high price but failed to promote and universal. The current electron microscope sample triangular glass knife, blade length of 5 to 6 mm. Although this knife can cut thin slices <0.1 microns in thickness and 0.1 ~ 2 microns thick semi-thin slices, but can not cut large. 1976 Bennett