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胞质体

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RESULTS: After co-culture, morphology of bone marrow stromal stem cells was changed, showing that flat cells began to retract and became spindle-shaped and some cells displayed a linear arrangement like Schwann cells.

结果:共培养后的骨髓基质干细胞形态发生改变,原来宽大扁平的胞体开始收缩,细胞胞体呈梭形,部分细胞类似施万细胞呈线性排列。

Results: PC12 cells fragmentation exhibited various evolving phases including totipotential protoplast, endopolyploid,polykaryon, multi-nucleo-endoplast, multinucleocyte, syncytium and multicells. The PCNA-IR was strongly positive in the earlyphase samples of cell fragmentation.

结果:PC12细胞呈现包括全能原生质体、核内多倍体、多核体、核-内质多聚体、合胞体和多细胞裂殖球的一系列演化阶段。

N perifocal tissue intracerebral hemorrhage there were rarefaction neuron,cell spaces augmentation,cell diminution,distinct demarcation of cell membrane and surrounding,and we discovered a lot of degeneration and necrosis nerve cells,cell body collapsed,pycnosis anachromasis,nucleoli disappeared. In EPO group we discovered that center area of hemorrhage shinked,nerve cells of degeneration and necrosis decreased in perifocal tissue,majority cells morphous were normal and pathological changes were light.

CH对照组在术后皮层出血中心无神经元,仅见少量胶质细胞,细胞间质空泡样改变;出血边缘区神经元稀疏,细胞间隙增大,细胞缩小,胞膜与周围分界清楚,并可见大量变性及坏死的神经细胞,表现为胞体皱缩,核固缩深染,核仁消失。rhEPO治疗组出血中心区变小,边缘区神经细胞变性坏死减少,多数存活细胞形态相对正常,病变较轻。

Fig.1 SHEE cultured on coverslide, the living cells were growing in single layer with rich cytoplasm, the nuclei were uniform in size with a nucleolus ph ×400 Fig.2 SHEE had a nucleus with ellipse shape, large nucleolus and the cytoplasm contained mitochondria and tonofibrilEM ×10 000 Fig.3 SHEE was spherical in shape, with pseudopods attached on petri dish and abundant villi on cell surface SEM ×5 000 Fig.4 Same as in Fig.3, cell attached on petri dish, appeared stellate or polygonal in shape, with abundant pseudopods and cytoplasmic processes. Protrusive nuclear region in central part of the cell had more micro-villi SEM ×5 000 Fig.5 Chromosomes of SHEE cells belonged to diploidy type Giemsa ×1 000 Fig.6 The SHEE cells of stained in dark brown by Ki67 immunohistochemistry were the proliferative cells Immunohistochemistry ×400 Fig.7 In SHEE cell culture, the nucleus stained red or pink by PI was dead cell, the green nucleus was living cell Fluorescent ×400 Fig.8 The cell labeled by TdT was apoptotic cell in which the chromatin of nucleus condensed in block, a pyknotic nucleus in the upper right conner was seen TdT labeled ×400

图1 SHEE培养在盖坡片上,活细胞单层生长,胞浆较丰富,细胞核大小一致,有核仁×400 图2 SHEE培养细胞细胞核椭圆形,核仁较大,胞浆有较丰富的线粒体和张力原纤维EM ×10 000 图3 SHEE细胞呈球状,有伪足贴壁,表面有密集微绒毛SEM ×5 000 图4 同上细胞贴壁,呈星状或多角形,有丰富伪足和胞浆突,核区隆起有较多微绒毛SEM ×5 000 图5 SHEE细胞染色体仍属二倍体Giemsa染色×1 000 图6 SHEE细胞Ki67免疫组织化学染棕黄色为增殖细胞×400 图7 SHEE培养细胞出现死细胞,胞核和胞浆PI染色呈红色或淡红色,蓝色细胞核为活细胞荧光显微镜×400 图8 细胞TdT标记阳性为凋亡细胞,染色质凝集呈块状,右上角有一固缩细胞核TdT标记×400

A lot of organelles such as mitochondria, rough endoplasmic reticula and Golgi bodies were observed in fiber cell. Then, double karyotheca disappeared, and the organelles disintegrated. Multivesicular bodies appeared in fiber cytoplasm. With the further development of fiber, fiber wall underwent continual thickening with aging, and polylaminate structure gradually appeared. While the agglutinated nucleus, transfer vesicles, plasma membrane and plasmodesmata still presented.

研究发现,次生壁形成早期,细胞核具有双层核膜,染色质凝聚,可见大量的线粒体、粗面内质网和高尔基体等细胞器存在于纤维细胞中;随后,双层核膜消失,细胞器将逐渐解体,多泡体开始出现在纤维细胞的细胞质;随着年龄的增加,纤维细胞壁逐渐增厚,并出现多层结构现象,而运输小泡、细胞膜、胞间连丝和凝聚的染色质将持续存在。

Results C/EBPαand C/EBPβexpressed differently in the outer root sheath,follicular papilla,hair matrix and sebaceous gland in embryonic period.The positive signals were chiefly distributed in the nucleˉuses.The expression of C/EBPαand C/EBPβwere found in the basal cell layer of outer root sheath and sebaceous gland in the new born and maturation phase,The expression in nucleuses of outer root sheat cells decreased with the differentiation but enhanced oppositely in the cytoplasm.

结果 C/EBPα和C/EBPβ分别在胚胎期毛囊外根鞘,毛乳头,毛母质及皮脂腺细胞的胞核内强表达;新生儿毛囊峡部下端外根鞘基底层细胞的胞核内也存在强表达,基底内层胞核阳性信号逐渐减弱;而成体毛囊核内阳性信号仅定位于峡部下端外根鞘基底层及皮脂腺基底层。

At the age of 19 weeks, we have observed ciliated-mucous cells, some cells presented with mucous granules in the supranuclear cytoplasm and a ciliating border with short growing shafts, while the other cells presented with large mucous granules as well as compound cilia.

小粘液颗粒细胞呈柱状,胞浆顶部含有少量球形的粘液颗粒,细胞表面有短小的微绒毛,细胞核大呈椭圆形,胞浆电子密度高,胞浆下部有粗面内质网和线粒体,核上部有高尔基体。

A part of microbial cells would autolyzed to release the intercellular alkanedegrading enzymes when they were cultured on alkane. Thus alkane could be degraded and synthesized alkane derivative with surface activity extracellularly. This surface-active agent would improve alkane emulsifying, and those unautolyzed cells could utilize the emulsified alkane sequentially.

微生物细胞在烃类基质中培养时,为了适应其疏水性环境以更好地摄取烷烃,会通过一部分细胞的自溶解体而使得胞内烃类代谢酶等释放,这样烃类在胞外被代谢生成具有表面活性的烷烃衍生物,该表面活性产物将促进烃类的乳化,使得剩余的未自溶解体的细胞可以借助生物表面活性剂而摄取降解烃类。

The ultrastructural characteristics of the lateral horn revealed bypresent study included:(1) A little amount neuropil existed between cell bodies in the cell clusters.

侧角区超微结构观察中见到的特点是:(1)侧角细胞簇内神经元胞体之间只有少量神经毡,有时出现相邻胞体的质膜邻接。

Four weeks later, in the baicalin group, some spindle-shaped UCB-MSCs began to present shrinkage, with slender processes on the cell edge, and some UCB-MSCs tended to be spherical-, conical-, and triangle-shaped appearance, with many slender processes on the pseudopodia.

细胞形态学观察:脐血单个核细胞培养第2~3天开始贴壁生长,2周左右达高峰,3周后细胞生长达80%~90%融合,此时脐血原始间充质干细胞呈较均一的长梭形。4周后,黄芩苷组原来呈梭形的胞体一部分发生收缩,细胞边缘出现细的突起;一部分胞体逐渐近似圆形、锥形、三角形,伪足有多个细长突起。

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