云计算中支持有效用户撤销的多授权方基于属性加密方案

提出了一个支持有效用户撤销的多授权方基于属性加密方案,每个用户都拥有一个"混合解密密钥"用于实现有效的用户撤销。与现有的方案相比,该方案在进行用户撤销时更加有效。除此以外,该方案还能实现用户的动态权限管理,在云端进行部分数据外包加密,密文部分解密,在期限过后已分享的数据可自我销毁。

巨细胞病毒单克隆抗体的制备及其初步应用

用CMV AD-169株感染自制人胚肺纤维母细胞,制备抗原,免疫BALB/c小鼠,取其牌细胞与Sp2/0-Ag14细胞融合,建立了一株稳定分泌抗HCMV特异性McAb的3B_6杂交瘤细胞株。3B_6McAb经鉴定属于IgG_3亚类。用间接免疫荧光法和间接酶免疫法证实为抗CMV特异性抗体。用微量细胞培养中和试验证实3B_6McAb在加有豚鼠血清后可阻止HCMV感染后细胞病变的出现。3B_6 McAb经间接免疫荧光法检测中,晚期孕妇羊水细胞中HCMV抗原,在68例标本中有一例为阳性,阳性率为1.47％。该法方便,快速可为在胎儿时期诊断先天性HCMV感染提供依据。

细胞凋亡的形态学变化过程及相关的分子调节研究进展

细胞凋亡是细胞自主的有序性死亡 ,发生凋亡的细胞膜发生皱缩、凹陷 ,染色质变得致密 ,最后断裂成小碎片 ,进一步发展细胞膜将细胞质分割 ,包绕细胞质和细胞核的断片 ,形成了凋亡小体。

THE CELL ORIGIN OF INTERLEUKIN 6 IN THE DISEASE OF MULTIPLE MYELOMA

In order to investigate the cell origin of IL-6 in the disease of multiple myeloma(MM),the IL-6 levels in PBMC culture supernatants from MM and the healthy control were determined with 7TD1 hybridoma growth assay and the ability or MM cell and stroma cell to produce IL-6 was compared.The results showed IL-6 level in PBMC culture supernatants of MM group was evidently higher than that of the control group.Both MM cell and stroma cell could produce IL-6, but IL-6 amount produced by MM cell was 1.6 times as much as that by stroma cell(P<0.01).The results suggest that MM cell is the main cell to produce IL-6.

肾综合征出血热患者血清IL-6和IgG水平及相关意义

为进一步了解 IL-6与肾综合征出血热(HFRS)广泛小血管损伤的关系及机制。我们检测了69例HFRS 患者血清 IL-6和 IgG 水平。并分析其相关意义,现将结果报告如下。材料与方法一、研究对象HFRS 患者69例,为我校附属一。