4866
In conclusion , our results strongly suggest that APS3 blocks muscle - type nAChRs , and show for the first time that in vivo toxicity of APS3 is likely to occur through an antagonist action of the compound on these receptors .
 Chemical: APS3; 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; Chemical: APS3