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Studies of these females show that the XIST locus on their tiny ring X chromosomes is either not present or not expressed.
 DNA: XIST locus; DNA: X chromosomes; DNA: tiny ring X chromosomes
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: XIST locus, X chromosomes, tiny ring X chromosomes 
Answer:
 DNA: XIST locus; DNA: X chromosomes; DNA: tiny ring X chromosomes