The strains mutagenized were refrigerated. This disposal could decrease reversion and improve it's oxidizing activity about one time.
菌株经诱变剂处理后再冷却处理，可减少回复突变，使氧化活性再提高近一倍。
2
Objective To explore the oncogenesis of the melanoma B16 cell clones mutagenized by space environment, and find the B16 cell clones with remarkably mutated immunogenicity.
目的观察空间诱变小鼠黑色素瘤b 16细胞株的成瘤性，寻找免疫原性发生变异的细胞株。
3
Strain 5 was continually mutagenized by ultraviolet radiation, strain 8 was selected on the cellulose-congo red medium on the ground that can shape better transparent ring.