23066
Given the efficacy of murine frontal cortex and spinal cord networks to detect neuroactive substances , we investigated the effects of omega - agatoxin on spontaneous action potential firing within these networks .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None