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The human myelomonocytic cell line U-937 as a model for studying alterations in steroid-induced monokine gene expression : marked enhancement of lipopolysaccharide-stimulated interleukin-1 beta messenger RNA levels by 1,25-dihydroxyvitamin D3 .
 protein: interleukin-1 beta; cell line: human myelomonocytic cell line U-937; RNA: lipopolysaccharide-stimulated interleukin-1 beta messenger RNA
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:
 protein: interleukin-1 beta; cell line: human myelomonocytic cell line U-937; RNA: lipopolysaccharide-stimulated interleukin-1 beta messenger RNA