利用NMR 方法能搞清细胞组织内特定物质的活动性。作者将恶性肿瘤组织与正常组织相比较,得出肿瘤组织中H_2O 的’H 核的弛豫时间(T_1,T_2)增高。材料和方法:用家兔大腿诱发实验骨肿瘤,使用累代移植的VX_2瘤的家兔胫骨骨髓内移植。3—4周后,麻醉下切取移植瘤,用健康家兔切取胫骨和大腿肌肉作对照。用NMR 分光器,共振频率为199.5MHZ,在22℃下测定组织中H_2O 的’H 核的弛豫时间。T_1用inversion recovery 法,T_2用SPinecho The NMR method can be used to understand the activity of specific substances in cell tissues. The authors compared the malignant tumor tissue with normal tissue and found that H2O’s relaxation time (T_1, T_2) increased in tumor tissue. Materials and Methods: Experimental bone tumors were induced in rabbit thighs and bone marrow transplantation was performed in all rabbits with a serially transplanted VX-2 tumor. Three to four weeks later, transplanted tumors were harvested under anesthesia, and healthy rabbits were used to cut the tibia and thigh muscles as controls. Using an NMR spectrometer, the resonant frequency was 199.5 MHz, and the relaxation time of the H2O core in the tissue was measured at 22°C. T_1 uses inversion recovery method, T_2 uses SPinecho