Healthy CD3+ T Cells

High-Purity Healthy CD3+ T Cells for Immunology and Cell Therapy Research

Healthy CD3+ T Cells are purified from the peripheral blood of clinically screened, IRB-consented healthy adult donors and cryopreserved in CryoStor® CS10 media. These mature T lymphocytes are the principal mediators of adaptive cellular immunity and support T cell biology, cancer immunotherapy, T cell engager potency testing, and TCR-based drug development. Cell counts and purity are reported per lot. Disease-state CD3+ T cells are also available.

What Healthy Donor CD3+ Selection Gives You

CD3 is the signal-transducing core of the T cell receptor complex rather than a marker of a single subset. Selecting on CD3 therefore captures the functional T cell compartment as a whole, which determines both what these cells can do and what donor variables matter.

• CD3+ isolation yields the total mature T cell pool — CD4+ helper, CD8+ cytotoxic, regulatory, naive and memory subsets, and unconventional populations such as gamma-delta and NKT-like cells — preserved in donor-native proportions.
• Because the CD3 complex is the target of anti-CD3 antibody stimulation, these cells respond to standard polyclonal activation with anti-CD3 and anti-CD28 without further manipulation, making them a reliable effector population for functional assays.
• Healthy donor T cells are the conventional effector arm for allogeneic cytotoxicity, mixed lymphocyte reaction, and T cell engager and bispecific antibody potency assays, where a non-diseased effector baseline is required.
• The naive-to-memory balance shifts with donor age as thymic output declines, so age band is a genuine experimental variable rather than a demographic footnote in studies of differentiation or expansion capacity.
• CMV serostatus substantially shapes the differentiated CD8+ effector memory compartment, which is why serostatus matters when interpreting phenotype or exhaustion marker data across donors.
• Cryopreservation in CryoStor® CS10, a defined serum-free medium, and isolation within 24 hours of collection support reproducible post-thaw viability and limit the ex vivo activation that confounds baseline phenotyping.

Donor Stratification Available

• Age band, relevant to naive and memory subset composition
• Sex assigned at birth, and race and ethnicity
• CMV serostatus, where documented
• HLA typing available on request for selected inventory, for MHC-restricted assays
• Medication-free donors, or donors on defined medication classes
• Body mass index and smoking status where captured
• Cohorts demographically matched to a disease-state T cell collection available on request

Product Features

• Research Use Only (RUO), CD3+ T cells
• Isolated from healthy, clinically screened donors
• High purity and viability (≥90% CD3+ cells)
• Cryopreserved in CryoStor® CS10 media
• Processed within 24 hours of collection
• IRB-approved protocols with electronic informed consent
• Customizable aliquot sizes; cell counts and purity reported per lot

De-identified Donor Data

• Comprehensive donor screening and verified health status
• Demographic data: age, sex assigned at birth, race/ethnicity
• Self-reported medication, allergy, and infectious disease history
• Additional donor metadata available on request

Applications

• T cell activation, proliferation, and cytokine release assays
• CAR-T and TCR-T therapy development, transduction, and expansion
• Bispecific antibody and T cell engager potency and redirected cytotoxicity assays
• Mixed lymphocyte reactions and allogeneic response studies
• Baseline reference and control arms for disease-state T cell comparisons
• T cell differentiation, memory formation, and exhaustion research
• Single-cell RNA sequencing and TCR repertoire analysis
• Immunosuppressant and immunomodulator screening

Other Healthy Donor Cell and Blood Products

• Healthy CD4+ T Cells
• Healthy CD8+ T Cells
• Healthy CD19+ B Cells
• Healthy CD56+ NK Cells
• Healthy PBMC
• Healthy Leukopak

Compliance and Quality Assurance

• IRB-approved collections and standardized procedures
• 21 CFR Part 11–compliant e-consent system
• HIPAA-compliant data management

Ordering & Customization

Healthy CD3+ T Cells are available in customizable aliquot sizes. For pricing, availability, international orders, or documentation needs, please contact learnmore@sanguinebio.com to confirm requirements and availability. Cells can also be isolated to order from our human leukopak inventory, and specification details are available on our human CD3+ T cells page.