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Buy Opdivo Nivolumab , has been designed to attach to a receptor called PD-1, found on certain cells of the immune system called T cells. Cancer cells can produce proteins (PD-L1 and PD-L2) that attach to this receptor, switching off the T cells. By attaching to the receptor, nivolumab prevents cancer cells from switching off T cells, thereby increasing the ability of the immune system to kill cancer cells.
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