10303
All loci have a similar organization , except for H1 . 8 that harbors two TcP2beta genes arranged in tandem and separated by a short repetitive sequence , named SIRE ( short interspersed repetitive element ) , which is also found upstream of the first gene of the tandem and downstream of the second .
 H1 . 8, TcP2beta genes
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 H1 . 8, TcP2beta genes