The fourth category is drugs that inhibit protein synthesis and function, the representative drugs are vincristine and paclitaxel; the fifth category is drugs that regulate the balance of hormones in the body, such as triamcinolone, an estrogen-inhibiting drug commonly used in breast cancer, and bicalutamide, an androgen-inhibiting drug commonly used in prostate cancer; the sixth category is molecular targeting drugs, such as gefitinib, commonly used in lung cancer; the seventh category is immune agents, such as PD1 and PDL1, whose main function The main function of these drugs is to restore the normal T-cell immune function of human body, thus killing tumor cells.