Human Primary Cells

It All Starts With The Right Cells

Unlike cell lines, primary cells are non-transformed, non-immortalized cells that are isolated directly from tissue. Closely mimicking a living model and yielding more biologically and physiologically relevant results, human primary cells have become an essential tool in the development of therapeutic treatments. Choose from an extensive range of fresh and cryopreserved peripheral blood, cord blood and bone marrow products to incorporate into your research workflow.


Peripheral Blood Products*

Cryopreserved Cells:
  • PBMCs: Standard or characterized (HLA, ADCC, ELISpot, Cell Proliferation Index)
  • CD34+ cells, B cells, T cells, NK cells, DCs, monocytes and other cell subsets available
  • Diseased PBMCs: Crohn’s Disease, Lupus, Psoriasis and more

Fresh Cells:

Cord Blood Products*

Cryopreserved Cells:
  • CD34+ cells from single or mixed donors
  • MNCs, T cells, B cells, NK cells, monocytes and other cell subsets available

Bone Marrow Products*

Cryopreserved Cells:
  • CD34+ cells, MNCs, CD33+ cells and CD36+ cells1
  • Mesenchymal cells (bone marrow stromal cells1) and CD105+ cells
Fresh Cells:
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*Certain products are only available in select territories. Please contact your local Sales representative or the Product & Scientific Support team at for further information.
1 Cultured cell product.

Why Use Our Primary and Cultured Cells?

  • Easily obtain rare cell populations, including hematopoietic stem and progenitor cells, from peripheral blood, cord blood or bone marrow.
  • Choose from large lots of cryopreserved cells to minimize time, labor and cost associated with screening multiple batches. Or isolate cell subsets yourself from high-quality whole blood products or apheresis collections (Leuko Paks).
  • Obtain the cells you need, catered to your specific cell and donor requirements.
  • Products are procured using Institutional Review Board (IRB)-approved consent forms and protocols to ensure they broadly comply with institutional and regulatory requirements.

Peripheral Blood

Human peripheral blood cells are isolated from adult whole blood or from a leukapheresis preparation produced using state-of-the-art apheresis systems. These apheresis collections, known as "Leuko Paks", contain very high concentrations of mononuclear cells and are available in the following Pak sizes: full, half and quarter Pak. Specific cell subsets are purified using STEMCELL's cell isolation products. Fresh whole blood products are collected directly into blood bags using acid-citrate-dextrose solution A (ACDA) or citrate-phosphate-dextrose (CPD) as the anticoagulant.

Cord Blood

Human cord blood is collected using citrate-phosphate-dextrose (CPD) as the anticoagulant. Mononuclear cells are obtained by density gradient centrifugation. Specific cell subsets are obtained using STEMCELL’s cell isolation products.

Bone Marrow

Human adult bone marrow cells are drawn from the posterior iliac crest (25 mL/site) from a maximum of four sites per donor. Heparin is used as the anticoagulant. Mononuclear cells (MNCs) are obtained by density gradient centrifugation, and specific cell types are purified using STEMCELL’s cell isolation products.

Can't Find What You're Looking For?

Request customized products to meet your specific research needs:

  • Defined donors and screening requirements (select cells based on gender, age, ethnicity, HLA type, disease state, vaccination status, ADCC status and other criteria)
  • Uncommon or rare cell types
  • Custom formats and volumes
  • Timely service and technical support

Donor Screening Policy

Cryopreserved Leuko Pak, Whole Blood and Bone Marrow Products

Donor Screening: Donors are screened for HIV (1 & 2), Hepatitis B, and Hepatitis C.
Cryopreserved products are shipped with negative test results from donor screening that is done within 90 days of collection.

Fresh Leuko Pak, Whole Blood and Bone Marrow Products

Donor Screening: Donors are screened for HIV (1 & 2), Hepatitis B, and Hepatitis C.
If the donor was screened within 90 days of donation the product will be shipped with negative test results from donor screening.
If the donor was not screened within 90 days of collection, a test sample will be taken at the time of donation and the product will be shipped before the screening results are available. In the unlikely event that a test result is positive, the customer will be contacted as soon as possible (usually within 24-72 hours from the time of shipment).

Cryopreserved Cord Blood Products

Donor Screening: Testing for HIV-1 and 2, Hepatitis B, and Hepatitis C is performed on a maternal blood sample and/or on a sample of the donated cord blood.

Fresh Order Fulfillment Policy

Shipment date of fresh Leuko Pak or whole blood orders is subject to change based on the ability of donors to meet procedural requirements during collection or on changes in donor availability. Collections will be rescheduled as soon as possible according to customer requirements.

STEMCELL does not test for infectious diseases other than those listed above and the testing that is done cannot completely guarantee that the donor was virus-free. Therefore THESE PRODUCTS SHOULD BE TREATED AS POTENTIALLY INFECTIOUS and only used following appropriate handling precautions such as those described in biological safety level 2. When handling these products do not use sharps such as needles and syringes.
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