4480
Heterologous expression of rCtr1 in HEK293 cells ( HEK / rCtr1 cells ) increased the uptake and cytotoxicity of copper , oxaliplatin , cisplatin and carboplatin , in comparison to isogenic vector - transfected control cells .
 Chemical: copper; Chemical: oxaliplatin; Chemical: cisplatin; Chemical: carboplatin
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: copper; Chemical: oxaliplatin; Chemical: cisplatin; Chemical: carboplatin