text: 1.严重联合免疫缺陷（severecombinedimmunodeficiency，SCID）（1）T细胞缺陷B细胞正常SCID（T-</sup>B+</sup>SCID）：①X连锁T-B+SCID病因为定位于Xq13.1上的白细胞介素-2受体γ链（IL-2Rγ）基因突变导致SCID，且是SCID中较常见的病种。
entities.entity: 严重联合免疫缺陷
entities.label: dis
entities.entity: severecombinedimmunodeficiency
entities.label: dis
entities.entity: SCID
entities.label: dis
entities.entity: T细胞
entities.label: bod
entities.entity: T细胞缺陷
entities.label: sym
entities.entity: B细胞
entities.label: bod
entities.entity: B细胞正常
entities.label: sym
entities.entity: SCID
entities.label: dis
entities.entity: SCID
entities.label: dis
entities.entity: SCID
entities.label: dis
entities.entity: Xq13.1
entities.label: bod
entities.entity: 白细胞介素-2受体γ链
entities.label: bod
entities.entity: IL-2Rγ
entities.label: bod
entities.entity: SCID
entities.label: dis
entities.entity: SCID
entities.label: dis