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Accumulation of abacavir in antigen presenting cells was rapid ( less than 1 h ) , and the intracellular concentrations were maintained for 16 h .
 Chemical: abacavir
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: abacavir