21706
In this randomized double - blind placebo - controlled cross - over trial , the effects of a curcuminoid supplement on serum pro - oxidant - antioxidant balance ( PAB ) and antibody titres to Hsp27 ( anti - Hsp27 ) and oxLDL ( anti - oxLDL ) were investigated .
 curcuminoid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 curcuminoid