原始细胞

The existence of nuclei in mature xylem cells is a symbol of primitiveness, for such nuclei all exist in secondary xylem of families or genera which are in the rather primitive stage of development in plant systems.

成熟木材细胞中的细胞核是一个原始的特征，均出现在植物系统发育上较为原始的科属木材中。

The epithelial component in this Wilms tumor consists of primitie cuboidal cells forming tubular structures and rosettes.

肿瘤含有原始结构的立方上皮细胞，形成原始管状结构和玫瑰花结样结构。

At higher magnification, an ovarian granulosa cell tumor has nests of cells which are forming primitive follicles.

在高倍镜下，卵巢颗粒细胞瘤的组织切片内可见细胞排列形成了许多的原始滤泡的细胞巢。

Possibly RS cells are a kind of mesoblastic precursor cells, possessing better self- renewal and differentiation capacity.

RS 细胞较之mMSC细胞可能是一种更原始的中胚层前体细胞，具有更强的自我更新和分化潜能。

Pregnant 50 day onward, FOXC2 mainly expressed in dorsal aorta, arch arteries, archae-endocardium and cells of vertebrae rudiment. The expression of FOXC2 could be seen in cordis great vessels, endocardium, chondrocyte and periost of axial skeleton during pregnant 70 days, and only in primary ossification center of axial skeleton and coronary artery during pregnant 80 day.

孕50天后表达于背主动脉、弓形动脉和原始心脏内膜、锥体雏形细胞；孕70天时，在心脏大血管、心内膜和中轴骨骼的软骨细胞和骨膜细胞表达；孕80天时仅表达于中轴骨骼的骨化中心和冠状动脉。

In functional study, overexpression assay was conducted in potato. Interestingly, tuberous swelling along roots was observed in some transgenic potato lines in addition to stem-derived tuber formation. Conclusively, we propose a hypothesis to illustrate the mechanism by which IbMADS1 participates in the initiation of tuberization in sweet potato.

利用解剖切片观察并比较转殖马铃薯与野生型甘薯的根部块状膨大区域，可以发现两者在膨大初期，中柱内含的细胞数皆增多，尤其是木质部细胞出现不正常增生情形，进而扩展中柱区域；因此，我们可以初步推论在甘薯块根发育初期，IbMADS1藉著作用於根部分生组织，尤其是中柱的原始形成层，从而促进细胞分裂，并参与甘薯的初期结薯。

The size of follicle begin primordial follicle to tertiary follicle(1.5～3mm).The number of mitochondrion increased,and the cristae increased.Gogi body change to type,cortical granule increased,and moved behind cytolemma.The proportion of small,middle and large follicles on ovary were 92.51%(92.51±5.87),4.60%(4.60±4.91) and 2.88%(2.88±2.22) respectively.

卵泡在发育过程中，卵泡细胞形成的突起与卵母细胞始终保持密切的联系：卵母细胞从原始卵泡到直径1.5～3mm的三级卵泡，细胞质中线粒体数量由少到多，线粒体内的嵴不断增加，高尔基体由不典型到变成典型，皮质颗粒由开始形成到形成较多的皮质颗粒，并逐渐地迁移到卵母细胞膜下。

Commitment to the hematopoietic and endothelial lineages within the yolk sac results in the development of discrete structures known as blood islands.

胚胎造血实质是具有不同分化潜能的前体如成血-血管形成细胞、原始红系前体细胞和永久造血多能祖细胞等有序形成的过程。

Coculturing of the transfected fibroblasts with neonatal rat ventricular myocyte cultures resulted in a significant reduction (68%) in the spontaneous beating frequency of the cultures compared with baseline values and cocultures seeded with naive fibroblasts.

与基线值和原始的成纤维细胞的再复制相比，乳鼠心室肌细胞培养基里转录的成纤维细胞的再繁殖，导致了培养基里自律性频率的显著下降（68%）。

There is now strong evidence that chloroplasts and other cell organelles, such as mitochondria, represent prokaryotic organisms that invaded heterotrophic eukaryotic cells early in evolution and are now part of an indispensable symbiotic union.

这恰恰是现在有关叶绿体及一些其他的细胞器如线粒体是被原始的真核细胞吞噬进细胞内，与宿主长期共生而逐渐演化出独立单元的内共生起源学说的重要证据。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。