PD- 1 is an immunosuppressant, including PD- 1 antibody and PD-L 1 antibody, and it is a new drug for immunotherapy. The main mechanism of action is to block the interaction between PD- 1 and PD-L 1, aiming at using human immune system to fight cancer. By blocking PD- 1/PD-L 1 pathway, T cells can be activated to recognize cancer cells, thus killing cancer cells.
Cancer help can apply for PD 1 free medication.