Conclusion the liquid nitrogen rapid freeze method is the best anti-ice crystal mation method for section preservation.

结论低温骤冷法是这三种防冰晶法中最利于保存切片的方法。

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The ink can be removed by a specific erasing liquid, which is composed of depigmenting agent, complexing agent, dispersant, anti-freeze agent, ethanol, essence and distilled water.

该墨水可用一种专门的擦除液擦除， 擦除液主要成份包括：消色剂、络合剂、分散剂、抗冻剂、乙醇、香精和蒸馏水。

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