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Updated: May 24, 2026

Quantitative Imaging of Lineage-specific Toll-like Receptor-mediated Signaling in Monocytes and Dendritic Cells from Small Samples of Human Blood
Published on: April 16, 2012
Assessment of T-cell function in the aged
1Department of Immunology, Fremantle Hospital, Fremantle, Perth, Western Australia.
Certain immunological activities, particularly cell-mediated immunity, decline with advancing age. Gaining insight into the underlying mechanism(s) is complicated by the fact that human T-cells comprise several functionally and phenotypically distinct populations and subpopulations. Proliferative studies designed to identify differences between old and young subjects that are based entirely on unfractionated peripheral blood lymphocytes (PBLs) or pan T-cell responses run the risk, therefore, of missing subtle but perhaps crucial changes in a particular T-cell type.
Certain immunological activities, particularly cell-mediated immunity, decline with advancing age. Gaining insight into the underlying mechanism(s) is complicated by the fact that human T-cells comprise several functionally and phenotypically distinct populations and subpopulations. Proliferative studies designed to identify differences between old and young subjects that are based entirely on unfractionated peripheral blood lymphocytes (PBLs) or pan T-cell responses run the risk, therefore, of missing subtle but perhaps crucial changes in a particular T-cell type.
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