4479
This study aimed to understand the role of copper transporter 1 ( Ctr1 ) in the uptake and toxicity of copper and platinum drugs in cultured rat DRG neurons , and the functional activities of rat Ctr1 ( rCtr1 ) as a membrane transporter of copper and platinum drugs .
 Chemical: copper; Chemical: copper; Chemical: platinum; Chemical: copper; Chemical: platinum
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: copper; Chemical: platinum; Chemical: copper; Chemical: platinum