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The normal upper limit of ER content in lymphocytes , expressed by fmol/micrograms of DNA, was 0.136.
 protein: ER; 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:
 protein: ER; cell type: lymphocytes