File talk:Nicotine biosynthesis june 2012.png
The structure of quinolinic acid is missing the nitrogen atom. This should be changed. — Preceding unsigned comment added by 2601:445:447f:e06f:5d4:f795:daec:5823 (talk) 00:22, 8 September 2018 (UTC)
The structure of quinolinic acid is missing the nitrogen atom. This should be changed. — Preceding unsigned comment added by 2601:445:447f:e06f:5d4:f795:daec:5823 (talk) 00:22, 8 September 2018 (UTC)[reply]
