5364
The major PKC beta transcription initiation site was identified by primer extension and S1 nuclease protection .
 GENE: PKC beta; GENE: S1 nuclease
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: PKC beta, S1 nuclease 
Answer:
 GENE: PKC beta; GENE: S1 nuclease