in vitro study

例句：

1. 1.In vitro studies have shown that certain bacteria can survive in the absence of oxygen.
   体外研究表明某些细菌可以在无氧环境下存活。
2. 2. The researchers conducted an in vitro study to investigate the effects of temperature on bacterial growth.
   研究人员进行了一项体外研究，以探究温度对细菌生长的影响。
3. 3. This in vitro study provides valuable insights into the mechanisms underlying disease development.
   这项体外研究为理解疾病发展机制提供了宝贵的见解。