2288
Selective regulation of nicotine and polyamines biosynthesis in tobacco cells by enantiomers of ornithine .
 Chemical: nicotine; Chemical: polyamines; Chemical: ornithine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: nicotine; Chemical: polyamines; Chemical: ornithine