1978
This pathway is induced by the cytotoxic effects that occur when DEDTC forms a complex with the copper ions present in the culture medium and transports them into the cell , suggesting that the DEDTC by itself was not able to cause cell death and the major effect is from its copper - complex in neuroblastoma cells .
 Chemical: DEDTC; Chemical: copper; Chemical: DEDTC; Chemical: copper
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: DEDTC; Chemical: copper; Chemical: DEDTC; Chemical: copper