液氮

Methods 4 cases of liquid-nitrogen-preserved homografts were used in treating complex congenital heart diseases.

应用液氮保存的同种异体带瓣大血管治疗复杂先心病4例(男性3例，女性1例，年龄5～24岁)。

AIM To investigate the effect of fluid nitrogen cr yopreservation on the MHC antigenicity of aortic homografts.

目的 探讨液氮低温保存对同种异体主动脉移植物抗原性的影响。

Fluid nitrogen cryopreservation has no obvious effect on the MHC antigeniacity of aortic homografts of rats.

液氮低温保存对大鼠主动脉平滑肌细胞和成纤维细胞MHC类的抗原性没有明显的影响。

METHODS By means of cell culture and flow cy-tometry we studied the effect of fluid nitrogen cryopreser-vation on the expression of MHCⅠantigen of smooth mus-cle cells and fibroblasts of aortic homografts of rats.

采用细胞培养技术和流式细胞仪技术研究液氮低温保存对大鼠主动脉平滑肌细胞和成纤维细胞主要组织相容性抗原Ⅰ类表达的影响。

METHODS By means of cell culture and flow cytometry we studied the effect of fluid nitrogen cryopreservation on the expres sion of MHC Ⅰ antigen of smooth muscle cells and fibroblasts of aortic homografts of ra ts.

采用细胞培养技术和流式细胞仪技术研究液氮低温保存对大鼠主动脉平滑肌细胞和成纤维细胞主要组织相容性抗原Ⅰ类表达的影响。

RESULTS Expression rate of MHCI antigen of cultured smooth muscle cells and fibroblast was（88.7±4.3）%,（84.8±2.0）%respectively;and that of the revived smooth muscle cells and fibroblasts of aortic homografts after cryopreservation was（89.4±3.5）%,（81.9±2.7）%respectively.

结果 正常培养的大鼠主动脉平滑肌细和成纤维细胞MHCⅠ类抗原表达的阳性率分别为（88.7±4.3）%和（84.8±2.0）%；液氮低温保存的大鼠主动脉平滑肌和成纤维细胞在复苏后MHCⅠ类抗原表达的阳性率分别为（89.4±3.5）%和（81.9±2.7）%。

RESULTS Expression rate of MHCI antigen of cult ured smooth muscle cells and fibroblast was (88.7±4.3)%,(84.8±2.0)%respectively; and th at of the revived smooth muscle cells and fibroblasts of aortic homografts after cryoprese rvation was (89.4±3.5)%,(81.9±2.7)%respectively.

结果正 常培养的大鼠主动脉平滑肌细和成纤维细胞MHC Ⅰ类抗原表达的阳性率分别为(88.7±4.3)％和(84.8±2.0)％；液氮低温保存的大鼠主动脉平滑肌和成纤维细胞在复苏后MHC Ⅰ类抗原表达的阳性率分别为(89.4±3.5)％和(81.9±2.7)％。

The titer degree of this hybridoma cell line remained unchanged after frozen in liquid nitrogen for three months.

将杂交瘤细胞株在液氮中冻存3个月后复苏，其分泌的单克隆抗体效价不变。

These materials could conduct electricity without resistance well above the temperature of liquid nitrogen (77 kelvins, or –196 degrees Celsius).

该材料在液氮温度（77K，-196℃）下出现了超导现象。

Irradiated by microwave with different energies to the microbridge junction, up to 77k, a series of Josephson response steps have been observed.(8) By using trilayer resist exposure technique and a critical metal lift-off step, the mushroom gates with 0.15μm gate-length for 8-millimeter high electron mobility transistors have been successfully fabricated.

用直流磁控溅射的方法在ZrO〓基底上制备了YBaCuO超导薄膜，采用电子束／紫外混合曝光技术，首次制备得到桥宽小至0.15μm的微桥结，在液氮温度（77K）测得该微桥结的临界电流密度只有150μA，并在不同能量的微波辐照下，观察到该微桥结的交流I-V特性具有Josephson台阶效应。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新