1931
We identified four RNA splicing factors - - hnRNP C , U2AF ( U2 auxiliary factor ) , PTB ( polypyrimidine tract binding protein ) , and PSF ( PTB associated splicing factor ) - - that bind to two short regions 3 of the ( CUG ) n , and found a novel 3 DMPK exon resulting in an mRNA lacking the repeats .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities:  
Answer:
 None