{"product_id":"mouse-nave-cd8-t-cell-isolation-kit-column-free-s0k3005","title":"Mouse Naïve CD8 T Cell Isolation Kit (Column-Free)","description":"\u003ch4\u003eProduct Specification\u003c\/h4\u003e\u003cdiv class=\"responsive-table product-detail-table details-table\"\u003e\n\u003cbr\u003e\u003ctable style=\"width: 100%; height: auto;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eFormat\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\n\u003cp\u003e\u003cspan\u003e1 mL Mouse Naïve CD8 T Cell Biotin-Antibody Cocktail\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2mL Streptavidin Beads\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eCapacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp\u003e\u003cspan\u003eSuitable for a total cell count of 1×10⁹, and can perform up to 100 sorting runs.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003ePrinciple of Separation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp\u003e\u003cspan\u003eIn this negative selection process, non- is labeled with a biotin-conjugated antibody.\u003c\/span\u003e\u003cspan style=\"color:#404040\"\u003eNaïve CD8 T\u003c\/span\u003e\u003cspan\u003eCells are then incubated with streptavidin‑coated nanomagnetic beads; non‑target cells are labeled via antibody‑bead complexes, while the target…\u003c\/span\u003e\u003cspan style=\"color:#404040\"\u003eNaïve CD8 T\u003c\/span\u003e\u003cspan\u003eThe cells remain unlabeled. The cell suspension is then transferred to a polystyrene tube and placed within the sorter's magnetic field. Under the influence of the magnetic field, the magnetically labeled non-target cells adhere to the tube wall, while the unlabeled\u003c\/span\u003e\u003cspan style=\"color:#404040\"\u003eNaïve CD8 T\u003c\/span\u003e\u003cspan\u003eThe cells remain in the supernatant. This supernatant is, therefore, the solution from which non-target cells have been removed.\u003c\/span\u003e\u003cspan style=\"color:#404040\"\u003eNaïve CD8 T\u003c\/span\u003e\u003cspan\u003eCell-enriched fraction.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eReactivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eMouse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eMagnetic Bead Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e150 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eSeparation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eColumn-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eSelection Strategy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eNegative Selection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eStability \u0026amp; Storage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp\u003eStore protected from light at 2–8 °C; do not freeze.\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003ch4\u003eBackground\u003c\/h4\u003e\u003cdiv\u003e\u003cp style=\"text-align:left\"\u003e\u003cspan style=\"color:#000000\"\u003eMouse naïve CD8 T cells are cytotoxic T cells that have matured in the thymus but have not yet encountered specific antigens; they remain in a quiescent state. These cells primarily reside in peripheral lymph nodes and the spleen, where they rely on IL-7 signaling to maintain homeostatic survival. Upon activation by exogenous antigens and costimulatory signals, they undergo extensive clonal expansion and differentiate into effector CD8⁺ T cells (CTLs) with direct cytotoxic activity and long-lived memory CD8⁺ T cells. They serve as the pivotal initiating cells of the organism's adaptive immune responses against viruses and tumors. Using negative magnetic bead sorting to isolate and purify naïve CD8⁺ T cells from mouse splenic cell suspensions yields a purity of over 90%. The sorted cells bear no surface antibody labeling and retain their natural quiescent state, making them suitable for subsequent in vitro activation, differentiation, and functional studies.\u003c\/span\u003e\u003c\/p\u003e\u003c\/div\u003e\u003ch4\u003eProtocol\u003c\/h4\u003e\u003cdiv\u003e\n\u003cspan style=\"display:inline; white-space:nowrap;\"\u003eNote: This kit does not include sorting buffer; please prepare it yourself. The corresponding Stater product number is\u003ca href=\"https:\/\/www.starter-bio.com\/s0d3018_starter_magsep_separation_buffer.html\" style=\"color:#0066FF; display:inline; white-space:nowrap;\"\u003eS0D3018\u003c\/a\u003e\u003c\/span\u003e\u003ctable style=\"border-collapse:collapse;width:auto;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eSteps\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eOperating Instructions\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eDosage and Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eCollect the mouse spleen, grind it on a 40 μm sterile filter to prepare a single-cell suspension of splenic cells, and perform cell counting;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eNote:\u003c\/span\u003e\u003cspan\u003eIt is recommended to count cells after staining with AO\/PI; splenic cells can be centrifuged at 400 g for 7 minutes;\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003ePrepare the sample\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eResuspend 1×10 in 100 μL of MagSep Separation Buffer\u003c\/span\u003e\u003csup\u003e\u003cspan\u003e7\u003c\/span\u003e\u003c\/sup\u003e\u003cspan\u003ecells;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eNote:\u003c\/span\u003e\u003cspan\u003eAdjust reagents proportionally according to the sample volume; set aside a pre-sorting sample to measure the initial naïve CD8 ratio;\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e1×10\u003c\/span\u003e\u003csup\u003e\u003cspan\u003e7\u003c\/span\u003e\u003c\/sup\u003e\u003cspan\u003ecells\/100 μL\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e3\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdd 10 μL of Mouse Naïve CD8 T cell Biotin Antibody Cocktail to the sample and gently mix.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eNote:\u003c\/span\u003e\u003cspan\u003eFor this step, gently pipette up and down 2–3 times to mix thoroughly;\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e10 μL \/ 100 μL\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e4\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eIncubate the antibodies in the cocktail with the cells at room temperature for 10 minutes;\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eIncubate at room temperature for 10 minutes\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e5\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eShake for 5–30 seconds to mix the Streptavidin beads evenly;\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eMix by shaking for 5–30 seconds\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e6\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdd 20 μL of Streptavidin beads to the sample;\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e20 μL\/100 μL\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e7\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eGently mix the magnetic beads and cells, and incubate at room temperature for 5 minutes;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eNote:\u003c\/span\u003e\u003cspan\u003eFor this step, you can use a pipette to gently blow the mixture 2–3 times to mix it evenly;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eDuring this step, the magnetic beads may settle at the bottom; you can gently tap the tube to remix them around the 2.5-minute mark;\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eIncubate at room temperature for 5 minutes\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e8\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdd MagSep Separation Buffer to the sample and immediately place it on the magnetic stand to prevent the magnetic beads from settling heavily at the bottom;\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdd the total volume to 2.5 mL (in a 5 mL flow cytometry tube)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdd the total volume to 7.5 mL (in a 15 mL centrifuge tube)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e9\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003ePlace the sample on the magnetic stand so that the magnetic beads adhere to the tube wall;\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdsorb using a single-well magnetic stand (3 min)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eAdsorb using a multi-well magnetic stand (5 min)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e10\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eTilt the magnetic stand and pour the sample into a new collection tube to collect the sample;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eNote: The sorted cells can be centrifuged at 400g for 7 minutes for subsequent culture and analysis.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\u003cp style=\"text-align:center\"\u003e\u003cspan\u003eCell sorting successful\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"3\" style=\"text-align:center;vertical-align:middle;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000;border:1px solid #000000\"\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan style=\"font-weight:bold\"\u003eNote:\u003c\/span\u003e\u003cspan\u003e1.\u003c\/span\u003e\u003cspan style=\"font-weight:bold\"\u003e \u003c\/span\u003e\u003cspan\u003e0.1-1 × 10\u003c\/span\u003e\u003csup\u003e\u003cspan\u003e8\u003c\/span\u003e\u003c\/sup\u003e\u003cspan\u003ecells (0.1-1 mL) are recommended to use a 5 mL single-well magnetic separator (Starter EasyIso Separator) with a total volume of 2.5 mL;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e2-5 × 10\u003c\/span\u003e\u003csup\u003e\u003cspan\u003e8\u003c\/span\u003e\u003c\/sup\u003e\u003cspan\u003eFor cells (2–5 mL), it is recommended to use a 15 mL magnetic rack (Starter EasyEights EasyIso Separator) with a total adsorption volume of 7.5 mL.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center\"\u003e\u003cspan\u003e2. If the sample viability is low, it is recommended to use a dead cell removal kit to eliminate dead cells (Dead Cell Removal Set, (RUO)#S0K0009).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp style=\"margin-bottom: 0px;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Starter","offers":[{"title":"100T","offer_id":43030516596811,"sku":"S0K3005-100T","price":0.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/8375\/1499\/files\/25088b77fef5454a8e85be0f1d71492c.jpg?v=1786510886","url":"https:\/\/www.antbioinc.com\/products\/mouse-nave-cd8-t-cell-isolation-kit-column-free-s0k3005","provider":"AntBio","version":"1.0","type":"link"}