用口α_1-抗糜蛋白酶(α_1-ACT)抗血清检测了70例肉瘤、9例癌和5例恶性黑色素瘤。70例各种肉瘤中31例呈阳性反应,其中25例恶性纤维组织细胞瘤中17例呈阳性反应,5例恶性黑色素瘤均呈阳性反应,9例癌均呈阴性。研究结果说明仅用 ACT 在鉴别各种肉瘤上价值不大,也不能做为组织细胞特异性标记物。并指出合理选择,配套使用特异性抗血清是确定肿瘤诊断的关键。 The sarcoma, neoplasms, and malignant melanoma were detected in 70 patients with α_1-anti-chymotrypsin (α_1-ACT) antiserum. Among the 70 cases of sarcoma, 31 cases were positive. Among them, 17 cases of malignant fibrous histiocytoma were positive, 5 cases of malignant melanoma were positive, and 9 cases of cancer were negative. The results of the study indicate that the use of ACT alone is not valuable in the identification of various sarcomas and cannot be used as a tissue-specific marker. And pointed out that rational selection, supporting the use of specific antiserum is the key to determine the diagnosis of cancer.