本发明公开一种抗PD‑L1抗体及应用、制备方法、试剂盒和药物，涉及生物检测和治疗技术领域。本发明提供的抗PD‑L1抗体，其含有重链可变区和轻链可变区，其中，重链可变区的氨基酸序列如SEQ ID NO.5所示，轻链可变区的氨基酸序列如SEQ ID NO.6所示。该抗PD‑L1抗体可以特异性识别结合PD‑L1重组蛋白、以及表达PD‑L1分子的炎症组织细胞或肿瘤组织细胞，具有较高的特异性以及亲和力，可用于免疫印迹、酶联免疫吸附、免疫组织化学以及流式细胞术检测，也可以用于肿瘤、自身免疫性疾病和慢性感染性疾病等疾病的治疗。
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