X-linked agammaglobulinaemia
noun [ U ] medical specialized UK uk/ˌeks.lɪŋkt ə.ɡæm.ə.ɡlɒb.jə.lɪˈniː.mi.ə/ us/ˈeksˌlɪŋkt eɪˌɡæm.əˌɡlɑb.jə.lɪˈniː.mi.ə/ (US X-linked agammaglobulinemia)
X-连锁无丙种球蛋白血症
a rare genetic condition in which low levels of immunoglobulins (= proteins that destroy harmful bacteria) affect the body's ability to fight infection