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This probe was used to identify a rel-related complementary DNA that hybridized to a 2.6-kilobase messenger RNA present in human T and B lymphocytes .
 RNA: 2.6-kilobase messenger RNA; DNA: rel-related complementary DNA
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:
 RNA: 2.6-kilobase messenger RNA; DNA: rel-related complementary DNA