小钢珠

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小钢珠小钢珠
  1. 在改进的DNA提取方法中,无需使用液氮,而将幼苗叶片放在真空冷冻干燥仪冷冻干燥2-3天,每个试管里盛放一小钢珠球,使用研磨仪粉碎叶片组织。

    In the procedure of improved DNA extraction method , the tissue of seedling leave were frozen and dried for 2-3 days in the vacuum freezing machine , then , was ground instead of using liquid nitrogen . There is one small steel ball in each tube .