Methods: Measuring the content of citrulline in cell cultures by HPLC.

方法：用HPLC检测细胞培养中瓜氨酸是否存在及其量的大小。

Remember to eat the rind, since this is where most of the citrulline is found.

记得一定要吃瓜皮，因为大部分瓜氨酸都在瓜皮里。

Watermelon has amino acids such as citrulline and arginine that help maintain the arteries.

如西瓜的瓜氨酸和精氨酸，有助于保持动脉的氨基酸。

Watermelon consumption increases free arginine and citrulline, which can help maintain cardiovascular function.

西瓜消费量增加精氨酸和瓜氨酸自由，它可以帮助维持心血管功能。

Watermelons: Watermelons are a rich source of citrulline, an amino acid that can be made into arginine, which then gets converted to nitric oxide.

西瓜：西瓜里富含瓜氨酸，这是一种可以转化为精氨酸的氨基酸，而精氨酸又可以变成一氧化氮。