1585
A pair of restriction fragment length polymorphisms ( RFLPs ), one of which hybridizes to the TCR constant region C beta 1 and the other to the C beta 2 gene , has been identified, suggesting these may be genotypic markers for an extended region of the TCR beta locus .
 DNA: TCR constant region C beta 1; DNA: C beta 2 gene; DNA: restriction fragment length polymorphisms; DNA: RFLPs; DNA: TCR beta locus
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 DNA: TCR constant region C beta 1; DNA: C beta 2 gene; DNA: restriction fragment length polymorphisms; DNA: RFLPs; DNA: TCR beta locus