8095
These repressor sites are pyrimidine rich and bind avidly to the polypyrimidine tract binding protein ( PTB ) in HeLa nuclear extracts as determined by UV crosslinking / competition assays .
 GENE: polypyrimidine tract binding protein; GENE: PTB
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: polypyrimidine tract binding protein, PTB 
Answer:
 GENE: polypyrimidine tract binding protein; GENE: PTB