3659
PURPOSE : Treatment of neuroblastoma cell lines with 13 - cis - retinoic acid ( cis - RA ) can cause sustained inhibition of proliferation .
 Disease: neuroblastoma; Chemical: 13 - cis - retinoic acid; Chemical: cis - RA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: neuroblastoma; Chemical: 13 - cis - retinoic acid; Chemical: cis - RA