13766
The single - coated tablets showed slow release in subsequent Krebs bicarbonate buffer with a lag time of 120min , while in contrast drug release from the double - coated tablets was initiated at 60min .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None