12555
Glucocorticoids can induce apoptosis on normal lymphoid cells and play a key role in the physiology of thymic selection .
 cell type: normal lymphoid cells
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: normal lymphoid cells 
Answer:
 cell type: normal lymphoid cells