Santa's little T helper cell with CD40L and T cell receptor. Helper T-cells are one the most important types of cells involved in adaptive immune response. They are a type of immune cell that help fight infection. When they sense an infection, they activate cytotoxic T-cells or B-cells to produce antibodies and help killer cells develop. Killer T-cells have granules (small particles) with enzymes that can detect and control early signs of cancer, virally infected cells, and protect against disease.
CD40 ligand or CD40L, is a protein that is primarily expressed on activated T cells. It binds to CD40 on antigen-presenting cells (APC), inducing proliferation of CD4+ T cells upon TCR activation. The TCR (T-cell receptor) is a complex of integral membrane proteins that participate in the activation of T-cells in response to an antigen.
This sticker is printed on durable, high opacity adhesive vinyl, with beautiful glossy finish. The vinyl protects the sticker from scratches. Don't forget to clean the surface before applying the sticker.
• High opacity film • Super durable vinyl, perfect for indoor use • A perfect addition to any water bottle, journal, laptop, or wherever you like • Size: 3'' x 3''