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The organochlorine pesticide , dichlorodiphenyltrichloroethane ( DDT ) , is still used to combat the spread of malaria in several developing countries despite its accumulation and known hepatotoxic effects that have been demonstrated both in vitro and in vivo .
 Chemical: organochlorine; Chemical: dichlorodiphenyltrichloroethane; Chemical: DDT
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: organochlorine; Chemical: dichlorodiphenyltrichloroethane; Chemical: DDT