Natural killer cells (NK cells) are a group of multifunctional cells with antitumor, anti-infection, and immunoregulatory functions. They are the first line of defense of the human immune system. NK cells can recognize, dissolve, kill, and destroy target cells. They have a significant cytotoxic effect on tumor cells. The adhesion properties of NK cells are similar to those of cancer cells, which means they can kill well-differentiated cancer cells.

自然杀伤细胞（NK细胞）是一类多功能细胞群体，具有抗感染、免疫调节和抗肿瘤作用，是人体免疫系统的第一道防线。NK细胞能广泛识别、溶解、杀伤、摧毁靶细胞，对肿瘤细胞具有显著的杀伤作用。NK细胞贴壁生长的特性与癌细胞相似，因此对分化好的癌细胞也具备杀伤功能。

NK细胞就像是免疫系统的“特种部队”，具备执行杀伤肿瘤细胞这一特殊任务的能力。同时，NK细胞能够抑制癌细胞附近新血管的生成，限制癌细胞生长所需要的养分，阻止肿瘤生长，防止肿瘤的复发和转移；NK细胞对病毒感染细胞具有杀伤性，调节患者的免疫功能。
NK cells are like the "special forces" of the immune system, capable of performing the special mission of killing tumor cells. They can also inhibit the formation of new blood vessels around tumor cells, restricting the nutrients needed for tumor growth, thereby preventing tumor growth, recurrence, and metastasis. NK cells are cytotoxic to virus-infected cells and can regulate the immune function of patients.

NK细胞免疫治疗通过采取患者约40ml自体外周血进行体外增殖培养，获得大量高活性NK细胞回输人体，起到抗肿瘤作用。临床研究证实，其在多种实体瘤及恶性血液病的治疗方面具有明显的疗效，在对抗炎症、调节免疫功能、延缓衰老、缓解更年期不良症状和美容等方面亦显现出良好的效果。
NK cell immunotherapy involves collecting about 40 ml of autologous peripheral blood from the patient for in vitro proliferation and culture to obtain a large number of highly active NK cells, which are then reinfused into the body to exert antitumor effects. Clinical studies have shown that this therapy has significant efficacy in the treatment of various solid tumors and malignant hematological diseases. It also shows good effects in anti-inflammation, immune function regulation, anti-aging, alleviation of menopausal symptoms, and cosmetic improvement.

NK细胞免疫疗法与传统肿瘤疗法相结合，可以加速患者的手术创面愈合，提高免疫力，减小复发转移风险，在减小放化疗副作用同时，增强治疗效果，降低耐药性，提升患者的生活品质。
When combined with traditional tumor therapies, NK cell immunotherapy can accelerate the healing of surgical wounds in patients, enhance immunity, reduce the risk of recurrence and metastasis, and improve treatment outcomes while reducing the side effects of radiotherapy and chemotherapy. It also helps to lower drug resistance and improve the quality of life of patients.

NK细胞免疫疗法的适应症及适用人群：
·适用于血癌、骨癌、淋巴癌、肠癌、肝癌、胃癌、盆腔癌、肺癌、乳腺癌、食道癌、肾癌等大部分实体瘤及恶性血液病的治疗；
·准备手术或术后的肿瘤患者；
·放、化疗患者；
·对放、化疗不敏感或无法耐受大剂量放、化疗的肿瘤患者；
·晚期肿瘤病人，出现广泛转移无法手术的患者，或年龄较大体质较差不宜手术的患者；
·所有带瘤生存患者；
·肝炎患者；
·肿瘤预防、需要提高机体免疫功能的患者。
Indications and Suitable Population for NK Cell Immunotherapy：
·Applicable for the treatment of most solid tumors and malignant hematological diseases, including leukemia, bone cancer, lymphoma, colorectal cancer, liver cancer, stomach cancer, pelvic cancer, lung cancer, breast cancer, esophageal cancer, renal cancer, etc；
·Patients with tumors preparing for surgery or postoperative；
·Tumor patients who are not sensitive to radiotherapy or chemotherapy or cannot tolerate high doses of radiotherapy or chemotherapy；
·Advanced tumor patients with extensive metastasis who are not suitable for surgery, or patients with poor physical condition due to old age and are not suitable for surgery；
·All patients living with tumors；
·Patients with hepatitis；
·Patients for tumor prevention and those who need to enhance the body's immune function.