15397
Treatments were assigned to pastures ( two pastures / treatment ) and cows had ad libitum access to one of three free - choice minerals : ( 1 ) no supplemental selenium ( Se ) , ( 2 ) 26 mg of supplemental Se from sodium selenite per kilogram , and ( 3 ) 26 mg of supplemental Se from seleno - yeast per kilogram ( designed mineral intake = 113 g / cow daily ) .
 selenium, Se, Se, sodium selenite, Se, seleno
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 selenium, Se, Se, sodium selenite, Se, seleno