4863
In vitro experiments confirmed the inhibitory effect of APS3 on mouse hemidiaphragm nerve - evoked muscle contraction with a median inhibitory concentration ( IC ( 50 ) ) of 20 . 3 mu M , without affecting directly elicited muscle contraction .
 Chemical: APS3
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: APS3