14664
While some histopathological changes were detected in mercuric chloride treated group , milder histopathological changes were observed in animal co - treated with sodium selenite and / or vitamin E supplementation to mercuric chloride - treated rats .
 mercuric chloride, sodium selenite, vitamin E, mercuric chloride
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 mercuric chloride, sodium selenite, vitamin E, mercuric chloride