用干冰对有色小鼠做永久性标记大和田一雄近来对有色小鼠做慢性实验的工作不断增加，促进了永久性动物标记方法的改进和发展。目前，已有的许多个体标记方法如金属耳标、剪Ｖ型耳号、穿耳孔，剪趾尖或尾端、刺墨、埋植染料等常用方法，虽各有特点，但都不是令人满意的。Ｂａｌ? Permanent Marking of Colored Mice with Dry Ice The recent work on chronic experiments in pigmented mice by Kazuo Adachi has promoted the improvement and development of permanent animal marking methods. At present, many of the existing individual marking methods, such as metal ear tag, scissors V-shaped ear tag, ear piercing, scissors toe tip or tail end, ink inking, implanted dye and other common methods, satisfied. Bal?