2572
Liver morphology was assessed using hematoxylin and eosin ( HE ) staining of liver tissue .
 Chemical: hematoxylin; Chemical: eosin
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: hematoxylin; Chemical: eosin