29881
The 24 - , 48 - , 72 - and 96 - h median lethal concentration ( LC50 ) values of Nanocid for silver carp were estimated at 0 . 810 , 0 . 648 , 0 . 383 and 0 . 202 mg / L , respectively ; 20 % and 10 % of the 96 - h LC50 values ( 0 . 04 and 0 . 02 mg / L ) were selected for subacute study .
 Chemical: Nanocid; Chemical: silver
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: Nanocid; Chemical: silver