13516
Although many studies have demonstrated the cytotoxic effects of these metabolites , the mechanisms by which alpha - ZOL or beta - ZOL mediates their cytotoxic effects appear to differ according to cell type and the exposed toxins .
 Chemical: alpha - ZOL; Chemical: beta - ZOL
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: alpha - ZOL; Chemical: beta - ZOL