多数学者证实,随着年龄的增长,免疫功能随之降低。 应用不同的致有丝分裂因子来探索淋巴细胞的分裂功能,说明与年龄有关的免疫活力主要在于胸腺—依赖性系统的活性高低。T淋巴细胞的数目随年龄逐渐减少,故老年疾病的增加可能与T淋巴细胞下降有关。老年人胸腺功能降低和分泌减少与T淋巴细胞的减少和功能的降低是密切相关的,这说明 Most scholars have confirmed that with age, immune function decreased. The use of different mitogenic factors to explore the lymphocyte division function, indicating that age-related immune activity mainly in the thymus-dependent system activity. T lymphocytes with the number of gradually decreased, so the increase in elderly diseases may be related to the decline of T lymphocytes. Decreased thymus function and decreased secretion in the elderly are associated with decreased T lymphocytes and decreased function, indicating that