甲醛溶液用于固定和保存各种组织和器官,主要在于其活跃的醛基能迅速与新鲜组织中蛋白质的游离氨基等多种功能基团进行结合,形成桥键,“醛化”蛋白质。不仅灭活各种分解酶,并能防止微生物的污染和腐败。但是长期浸泡于此液中的组织能保存到怎样一个水平,尚未见有报道。现通过对一组封存于甲醛溶液中19～40年的陈旧离体标本的 Formaldehyde solution for the fixation and preservation of various tissues and organs, mainly because of its active aldehyde group can quickly and fresh tissue proteins and other free amino groups and other functional groups to form a bridge, “hydroformylation” protein. Not only inactivates various catabolic enzymes, but also prevents microbial contamination and spoilage. However, the tissue soaked in this fluid for a long time can be preserved to a certain level, but no reports have been reported yet. Now through a group of sealed in formaldehyde solution for 19 to 40 years old stale specimens