3660
Since cis - RA has demonstrated clinical responses in neuroblastoma patients , it may be effective in preventing relapse after cytotoxic therapy .
 Chemical: cis - RA; Disease: neuroblastoma
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:
 Chemical: cis - RA; Disease: neuroblastoma