3916
Frog type I ( Ft I ) and frog type II ( Ft II ) slowly adapting ( SA ) units produced spikes only at the indentation phase , and the threshold response phase ( TRP ) , i . e . . the phase of the first spike was for ca .
 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