2381
Sequence homology, single nucleotide mutations , and anti- CD28 Ab stimulation studies established that the NF-kappa B -like sequence in the promoter of the IL-8 gene functioned as a CD28 response element .
 DNA: CD28 response element; DNA: IL-8 gene; protein: IL-8; protein: CD28; protein: CD28; DNA: promoter; DNA: NF-kappa B -like sequence; protein: NF-kappa B; protein: anti- CD28 Ab
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: CD28 response element, IL-8 gene, IL-8, CD28, CD28, promoter, NF-kappa B -like sequence, NF-kappa B, anti- CD28 Ab 
Answer:
 DNA: CD28 response element; DNA: IL-8 gene; protein: IL-8; protein: CD28; protein: CD28; DNA: promoter; DNA: NF-kappa B -like sequence; protein: NF-kappa B; protein: anti- CD28 Ab