27122
Five days before fracture , half of the animals received Botulinum Toxin A - injections in the muscles of the fractured leg to induce muscle paralysis ( unloaded group ) , while the other half received saline injections ( control group ) .
 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