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Influence of estradiol and tamoxifen on susceptibility of human breast cancer cell lines to lysis by lymphokine-activated killer cells .
 cell line: human breast cancer cell lines; cell type: lymphokine-activated killer cells
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:
 cell line: human breast cancer cell lines; cell type: lymphokine-activated killer cells