上帝充通大学 Shanghai Jiao Tong University 14.8.1 Radioisotopes放射性同位素 ©Advantages When 1)very high sensitivity is required,or 2) turnover rates need to be determined,or 3)the fate of portions of a molecule need to be followed, radioisotopes are very useful. @Importance of a proper controli设置对照很重要 To exclude the possibility of chemical transformation排除化 学转化的可能性 ·Killed cell control采用死细胞为对照 ·4%formalin is commonly used.福尔马林 Microbiology.Shanghai Jiao Tong UniversityMicrobiology, Shanghai Jiao Tong University 14.8.1 Radioisotopes 放射性同位素 Advantages • When 1) very high sensitivity is required, or 2) turnover rates need to be determined, or 3) the fate of portions of a molecule need to be followed, radioisotopes are very useful. Importance of a proper control设置对照很重要 • To exclude the possibility of chemical transformation排除化 学转化的可能性 • Killed cell control采用死细胞为对照 • 4% formalin is commonly used.福尔马林