porphobilinogen

例句：

1. 1. The patient's blood tests showed high levels of porphobilinogen, indicating a potential allergic reaction.
   患者的血液测试显示高浓度的卟啉原，暗示可能存在过敏反应。
2. 2.In the study, researchers found that exposure to certain pollutants could increase the production of porphobilinogen in the body.
   研究中，研究人员发现某些污染物暴露可能会增加体内卟啉原的产生。
3. 3. Porphobilinogen is a key intermediate in the biosynthesis of vitamin B12, which is essentialfor red blood cell formation and function.
   卟啉原是维生素B12生物合成的关键中间体，对红细胞的形成和功能至关重要。