4570
In addition , the Cu concentration in root , Cu ( root ) , was retarded by an increase of { Mg ( 2 + ) } .
 Chemical: Cu; Chemical: Cu; Chemical: Mg ( 2 + )
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: Cu; Chemical: Cu; Chemical: Mg ( 2 + )