14901
On the basis of these findings , we conclude that HEP and HCB have additive and synergistic effects on the development of GST - P - positive foci and that higher risks are associated with a combination of residual organochlorine pesticides in foods than with individual residual organochlorine pesticides .
 Chemical: HEP; Chemical: HCB; Chemical: organochlorine; Chemical: organochlorine
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: HEP; Chemical: HCB; Chemical: organochlorine; Chemical: organochlorine