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The 50 % effective dose of d - tubocurarine ( microg / kg ) in the tibialis muscle was smaller in the P10 ( 33 . 6 + / - 5 . 4 ) than in the S ( 61 . 9 + / - 5 . 0 ) or the P100 ( 71 . 3 + / - 9 . 6 ) groups .
 Chemical: d - tubocurarine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: d - tubocurarine