853
Since CENP - B gene is conserved in mammalian species and CENP - B boxes are found also in mouse centromere satellite DNA ( minor satellite ) , this sequence - specific DNA - protein interaction may be important for some kind of common centromere function .
 GENE: CENP - B gene; GENE: CENP - B boxes
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: CENP - B gene, CENP - B boxes 
Answer:
 GENE: CENP - B gene; GENE: CENP - B boxes