In two thousand three, Japanese researchers identified a new member of the B-vitamin group. It is a substance known as pyrroloquinoline quinone, or PQQ.

 
  • 在2003年,日本的研究人员鉴别出了一个维生素B族的新成员。它是一种叫吡咯喹啉醌或PQQ的物质。
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