8568
Shikonin ( SKN ) , an herbal extract from the Chinese plant , has been reported to induce either apoptosis or necrosis depending on cell types or its concentrations .
 Chemical: Shikonin; Chemical: SKN
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: Shikonin; Chemical: SKN