3549
Calcium concentrations 1 day postpartum were higher in cows treated with vitamin D3 about 32 days prepartum ( 8 . 8 mg / 100 ml ) than in control cows ( 5 . 5 mg / 100 ml ) .
 Calcium, vitamin D3
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Calcium, vitamin D3