things in tobacco SJC Public Health Services | Nicotine is an addictive, poisonous chemical found tobacco. It can also be made in the laboratory (synthetic nicotine). π§ͺ Nicotine Chemicals in Cigarettes: From Plant
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![PDF] Maturity stages for stalk-cut burley tobacco and their relationships with leaf chlorophyll content](https://figures.semanticscholar.org/b4d968d73bc49ca44896ae2708ad88d0678278ac/5-Figure2-1.png)



















