下列有關 immunodeficiency diseases 之敘述，何者為錯誤？
DiGeorge syndrome 屬於一種 T cell immunodeficiency disease
DiGeorge syndrome 之特徵之一為 congenital thymic aplasia
DiGeorge syndrome 之特徵之二為 hypoparathyroidism
DiGeorge syndrome 不能以 thymus graft 來治療
