4706
Dose dependency was studied after Cd exposure with drinking water ( 5 and 50 ppm CdCl 2 equivalent to 0 . 4 and 4 mg / kg b . wt ; Cd 0 . 4 , Cd 4 ) for 28 days and EE 2 as reference .
 Chemical: Cd; Chemical: CdCl 2; Chemical: Cd; Chemical: Cd; Chemical: EE 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: Cd; Chemical: CdCl 2; Chemical: Cd; Chemical: Cd; Chemical: EE 2