Peripheral blood CD4+CD45RO+ memory T cells are formed after a naïve T cell has come into contact with an antigen. Memory T cells remain inactive until they encounter the same antigen and reactivate to form effector T cells. Having encountered the antigen previously this second encounter produces a faster and stronger immune response to eliminate the foreign invader or cancer cell.
Human CD4+CD45RO+ memory T cells are isolated from peripheral blood mononuclear cells by depleting cells expressing CD8, CD14, CD16, CD19, CD20, CD36, CD45RA, CD56, CD123, TCRγ/δ, and CD235a are from the mononuclear cell population using immunomagnetic particles leaving purified, untouched CD4+CD45RO+ memory T cells. Isolated cells are characterized by flow cytometry to ensure a highly pure and viable cell population.
Cells were obtained using Institutional Review Board (IRB) approved consent forms and protocols.
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Format | Catalog # | QTY/Unit |
Cryopreserved | PB445RO005C | 5 million/vial |
Product Specification
Species: | Human |
Cell Source: | Peripheral Blood |
Product Type: | Primary Cells |
Cell Type: | T Cells |
Donor Attributes: | HIV-, HepB-, HepC- |
Purity: | ≥85% by Flow Cytometry |
Viability: | ≥95% by Flow CytometryNote: For cryopreserved samples the freeze thaw cycle may decrease cell viability by 10-15% post thaw. |
Contains: | Fresh: PBS with 5% FBS and 0.5% BSA Frozen: CryoStor™ CS10 (10% DMSO) |
Flow Data
Figure 1. Representative flow data of enriched CD4+CD45RO+ memory T cells from peripheral blood prior to cryopreservation.