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Surprisingly , however , saturation analysis of HU210 - stimulated [ ( 35 ) S ] GTP gamma S binding demonstrated that ' glutamatergic ' CB1 is more efficiently coupled to G protein signalling than ' GABAergic ' CB1 .
 Chemical: HU210; Chemical: [ ( 35 ) S ] GTP gamma S
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: HU210; Chemical: [ ( 35 ) S ] GTP gamma S