19265
Forty male albino Wistar rats were randomized into control ( C ) , sodium metabisulfite ( Na2S2O5 ) treated ( S ) , ghrelin treated ( G ) and , Na2S2O5 + ghrelin treated ( SG ) groups .
 Chemical: sodium metabisulfite; Chemical: Na2S2O5; Chemical: Na2S2O5
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: sodium metabisulfite; Chemical: Na2S2O5; Chemical: Na2S2O5