4482
The uptake of copper by both cultured rat DRG neurons and HEK / rCtr1 cells was saturable and inhibited by cold temperature , silver and zinc , consistent with it being mediated by rCtr1 .
 Chemical: copper; Chemical: silver; Chemical: zinc
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: silver; Chemical: zinc