16108
Correlating with FSH beta activation , both PKA activity and levels of pCREB were increased to a greater extent by low compared with high GnRH pulse frequencies , and the induction of pCREB was also attenuated by overexpression of DNPKA at both low and high pulse frequencies .
 Chemical: GnRH
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: GnRH