in-vivo counting

例句：

1. 1. The researchers conducted an in-vivo counting study to investigate the effects of exercise on heart health.
   研究人员进行了一项活体计数研究，以探究运动对心脏健康的影响。
2. 2. During the experiment, we used in-vivo counting techniques to monitor the changes in the animal's behavior.
   在实验期间，我们使用了活体计数技术来监测动物行为的变化。
3. 3.The team successfully applied in-vivo counting methods to analyze the data collected from the field experiments.
   该团队成功地将活体计数方法应用于分析从现场实验收集的数据。