5271
To further elucidate the molecular basis of ColQ - 1a ' s synaptic expression , here we investigated the expression and localization of cAMP - responsive element binding protein ( CREB ) at the synaptic and extra - synaptic regions of fast - and slow - twitch muscles from adult rats .
 Chemical: cAMP
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: cAMP