text: 实验室发现T、B细胞计数正常T细胞增殖反应正常依赖T细胞的B细胞增殖反应低下体外淋巴细胞培养中T细胞表达CD40L减少是诊断的要点之一，但要注意常见变异性免疫缺陷病（CVID）等其他一些病也有CD40L表达减少。
entities.entity: T、B细胞计数
entities.label: ite
entities.entity: T、B细胞计数正常
entities.label: sym
entities.entity: T细胞
entities.label: bod
entities.entity: T细胞增殖反应正常
entities.label: sym
entities.entity: T细胞
entities.label: bod
entities.entity: B细胞
entities.label: bod
entities.entity: 依赖T细胞的B细胞增殖反应低下
entities.label: sym
entities.entity: 体外淋巴细胞培养
entities.label: pro
entities.entity: T细胞
entities.label: bod
entities.entity: CD40L
entities.label: bod
entities.entity: 变异性免疫缺陷病
entities.label: dis
entities.entity: CVID
entities.label: dis
entities.entity: CD40L
entities.label: bod