21383
Exposure to nicotine ( 1 - 10 mu M ) for 72 hr in vitro increased dendritic arborization and soma size in primary cultures .
 Chemical: nicotine
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