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微量元素硒最初于1818年在硫酸工厂的铅容器沉积物中被发现。Dalbert于1912年,Walker & Klein于1915年相继用硒治疗癌症,后二学者在其论著中指出,在皮下肿物用硒治疗会发生液化、坏死、然后愈合,而对深部肿物无效;文中还提及Von Wasserman(1866～1925)通过动物试验证实硒对恶性肿瘤确有疗效,并认为硒是过氧化氢分解的一种催化剂,从而预示了谷胱甘肽过氧化酶的存在,但上碠报道均未引起重
Trace elemental selenium was first discovered in 1818 in the lead container deposits of sulfuric acid plants. Dalbert In 1912, Walker & Klein used selenium to treat cancer in succession in 1915. The latter two scholars pointed out in his treatise that liquefaction, necrosis and then healed with selenium in subcutaneous tumors would be ineffective for deep tumors. It is also mentioned that Von Wasserman (1866-1925) confirmed the efficacy of selenium in malignant tumors through animal experiments and considered selenium as a catalyst for hydrogen peroxide decomposition to predict the presence of glutathione peroxidase碠 reports have not caused heavy