3878
Results indicated diabetic conditions reduced contractile activity and cell viability , whilst vitamin C ( 100 mu M ) and folic acid ( 1 mM ) administered concurrently significantly improved them to values comparable with the control .
 vitamin C, folic acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 vitamin C, folic acid