急性淋巴细胞白血病（ALL），依据免疫学分型，将ALL分为T淋巴细胞白血病（T－ALL）和B淋巴细胞白血病（RALI。），T－ALL的免疫学特征为CD入CD；的表达；B－ALI。则为抗原CD：9、CD2十或CD7＋。的表达。而淋巴细胞T系抗原和B系抗原同时表达的也有报道，我们近来遇到1例，报道 Acute lymphoblastic leukemia (ALL), according to immunological typing, ALL is divided into T-lymphocytic leukemia (T-ALL) and B-lymphocytic leukemia (RALI.), T-ALL immunological characteristics of CD into CD; ;B-ALI. The antigen is CD:9, CD2, or CD7+. expression. The simultaneous expression of T-lymphocyte antigens and B-type antigens in lymphocytes has also been reported. We have recently encountered 1 case.