5517
However , passage of BMS - 186318 - resistant HIV - 1 ( RF ) in the presence of either saquinavir or SC52151 , which represented sequential drug treatment , produced viable viruses resistant to both BMS - 186318 and the second compound .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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