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The inert quality of MRL-Ipr/Ipr (Ipr) peripheral CD4-CD8- (CD4-8-) T cells manifests primarily as an inability to proliferate or produce IL-2 in response to TCR or mitogenic stimulation .
 protein: TCR; cell type: T cells; cell line: MRL-Ipr/Ipr (Ipr) peripheral CD4-CD8- (CD4-8-) T cells; protein: IL-2
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: TCR, T cells, MRL-Ipr/Ipr (Ipr) peripheral CD4-CD8- (CD4-8-) T cells, IL-2 
Answer:
 protein: TCR; cell type: T cells; cell line: MRL-Ipr/Ipr (Ipr) peripheral CD4-CD8- (CD4-8-) T cells; protein: IL-2