regulatory factor的用法和样例：
例句
- Each tablet contains different growth factors, transforming growth factors and liquid regulatory factor for skin.
每片包含了不同的生长因子，转化生长因子和液体调节因子的皮肤。 - Initiation of transcription requires sophisticated coordination of many different regulatory factors.
转录过程的启动需要对许多不同调节因子进行精密复杂的协调。
