29297
IGABA activation was slightly more efficacious on receptors formed from beta 2 / 3 subunits ( maximal IGABA stimulation through alpha 1 beta 3 receptors : 332 +/- 64 % and alpha 1 beta 2 : 271 +/- 36 % vs . alpha 1 beta 1 : 171 +/- 22 % , p < 0 . 05 ) and alpha 3 - subunits ( alpha 3 beta 2 : 375 +/- 51 % vs . alpha 5 beta 2 : 136 +/- 22 % , p < 0 . 05 ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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