145522
However further research in this area is ongoing , and it is expected that development of new neural nicotinic acetylcholine receptor agonists will be likely to lead to novel analgesics suitable for use in humans within the next few years .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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