Of all the cells that make up the immune system, NK cells are the most aggressive. They make up nearly 15% of the total circulating lymphocyte (white blood cells) population and are part of the body’s innate immune system. NK cells are called natural killer cells because they do not need to recognize specific antibodies before releasing cytokines (strong intracellular signals) to destroy abnormal cells, allowing for a faster immune response. Once target cells are identified, NK cells trigger an immune response and direct other immune cells (dendritic cells, macrophages, and T cells) to take action against a potential threat to the body. Enhancing NK cell activity boosts the body’s targeted immune response and promotes the normal process of eliminating unhealthy cells.
We currently use United States Postal Service as our domestic shipping carrier.
We try to ship every order the same day it is placed if we receive the order by noon Eastern Standard Time. Clients should expect to receive their expedited order within 3-4 business days of placing the order. Clients placing an order with free shipping should expect to receive their order within 5-10 business days of placing the order.
We provide FREE shipping on orders over $75.00. Orders under $75.00 can choose between no- rush and expedited shipping with wait times as explained above. Alaska and Hawaii ship via Express 2-Day Air freight is charged with a $30.00 minimum.
You will receive an auto-generated email from USPS after your order has shipped that will contain your order’s tracking information.