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切片刀在形态学制样中起着重要作用。迄今为止,人们曾用过三种切片刀,即钢刀、钻石刀和玻璃刀。利用钢刀历史较长,组织学很多知识都是靠钢刀切石蜡包埋切片获得的。但钢刀有两个不足,一是不能切得太薄,二是不能切塑料包埋切片。钻石刀虽然已问世多年,也能切各种厚度不同的包埋切片,但因价格昂贵,始终未能推广和普及。1950年Latta首先研制成电镜制样用的三角玻璃刀,这种玻璃刀虽然能切超薄切片和半薄切片,但不能切大
Slicers play an important role in morphological preparation. To date, three types of slicing knives have been used: steel knives, diamond knives and glass knives. Long history of the use of steel knife, a lot of knowledge of histology are cut by paraffin-embedded steel blades obtained. But there are two shortcomings of the steel knife, one can not cut too thin, the second is not cut plastic embedded sections. Although the diamond knife has come out for many years, but also cut a variety of different thickness of embedded sections, but expensive, has not been able to promote and universal. In 1950, Latta first developed the triangular glass knife used for making electron microscope samples. This glass knife can cut large and thin slices, but can not cut large