Memory T cells are “experienced” T cells that lie dormant in tissues and protect the body from the re-emergence of potentially pathogenic or harmful cells (such as bacteria, viruses, cancer cells). Because memory T cells have encountered their antigen in a previous infection, memory T cells can mount a faster and stronger response the second time around.
Memory CD4 T cells are isolated from mononuclear cells by negative selection using immunomagnetic cell separation procedures. Positive selection is also available at your request.
For cryopreserved memory CD4 T cells, either prepare cells for long-term storage in Liquid Nitrogen vapor phase or thaw for use. Storage in liquid phase nitrogen is NOT recommended. Short-term storage of cells (less than 2 weeks) at -80°C is acceptable but should be minimized to ensure maximum stability. Once thawed, samples must be used immediately.
Testing: Donors are tested for HBV, HCV, HIV, HTLV, WNV, Trypanasoma cruzi, and Syphilis.