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IL-8 , a potent chemotactic factor for neutrophil granulocytes and lymphocytes , is a proinflammatory cytokine secreted by a variety of cell types, including T cells .
 IL-8, neutrophil granulocytes, lymphocytes, T cells, chemotactic factor
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 IL-8, neutrophil granulocytes, lymphocytes, T cells, chemotactic factor