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Finally, RNA from activated lymphocytes was amplified by polymerase chain reaction using oligonucleotide primers flanking the 196 base pair long region encoding the DNA-binding domain of the human intestinal receptor .
 DNA: 196 base pair long region; protein: DNA-binding domain; cell type: activated lymphocytes; RNA: RNA; protein: human intestinal receptor; cell type: lymphocytes
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: 196 base pair long region; protein: DNA-binding domain; cell type: activated lymphocytes; RNA: RNA; protein: human intestinal receptor; cell type: lymphocytes