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Lymphocytes are particularly susceptible to DNA damage-induced apoptosis , a response which may serve as a form of ' altruistic suicide ' to counter their intrinsic high potential for mutation and clonal expansion .
 cell line: 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:
 cell line: Lymphocytes