2364
These data define a conserved pathway wherein sequential histone modifications establish a " histone code " essential for the epigenetic inheritance of heterochromatin assembly .
 GENE: histone; GENE: histone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: histone; GENE: histone