949
The p53 gene expresses 12 different proteins ( isoforms ) , including TAp53 ( p53 ( or p53 alpha ) , p53 beta and p53 gamma ) and Delta 133p53 isoforms ( Delta 133p53 alpha , Delta 133p53 beta and Delta 133p53 gamma ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None