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Thus , hemopressin modulates the function of key feeding - related brain nuclei of the mediobasal hypothalamus , and descending pain pathways of the PAG and DR , and not higher limbic structures .
 Chemical: hemopressin
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: hemopressin