4862
When administrated locally by intramuscular injection to mouse , APS3 decreased the compound muscle action potential recorded in response to in vivo nerve stimulation , with an ID ( 50 ) of 0 . 5mg / kg .
 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