2963
Therefore , we investigated the potential effects of paraoxon exposure on spontaneous tail contractions at 26 hpf - an early locomotor behavior that results from innervation of primary ( not secondary ) motoneuron axons to target axial muscles .
 Chemical: paraoxon
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: paraoxon