7197
Effect of nitrous oxide ( N2O ) on the somatosympathetic A - and C - reflexes was investigated using artificially ventilated rats anesthetized with alpha - chloralose and urethane .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None