1724
The addition of 10 , 20 , or 40 mmol / L methionine choline simultaneously with addition of 10 mu mol / L Pb ( 2 + ) decreased [ Ca ( 2 + ) ] ( i ) in Ca ( 2 + ) - free culture medium by 39 . 0 % , 66 . 0 % , and 61 . 6 % , respectively , in a concentration - dependant manner in a certain dose range .
 Chemical: methionine choline; Chemical: Pb ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 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: methionine choline; Chemical: Pb ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + )