28184
MATERIALS AND METHODS : The effects of HEGG were assessed in melanin content assays in B16F10 melanoma cells compared with the reference drug kojic acid ( 500mM ) .
 Chemical: kojic acid
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: kojic acid