细胞

Our results showed that the transportation of JA from phloem to xylem occurred mainly through ray parenchyma cells and cambium regions, and that JA could be transported rapidly upwards and downwards through vessel tube and sieve tube.

3H—JA分布在筛管、次生韧皮部的薄壁细胞和射线细胞、形成层区以及导管、次生木质部的薄壁细胞和射线细胞，其中，在韧皮部和木质部的射线细胞及筛管、导管壁周围分布最多。

MethodsNeural tubes isolated from the region between midotic placode and third somite of mouse embryo at ED 8.5d were cultured in DMEM/F12 serum-free medium containing basic fibroblast growth factor and epidermal growth factor. The cell cycle of CNCCs was analyzed with flow cytometry, the proliferation capability was determined by MTT method, AP-2α expression was detected by immunocytochemistry as a biological marker of cardiac neural crest cells. The features of migration, multi-directional differentiation were observed as well.

材料与方法成年2月龄C57／BL6小鼠交配，取ED8.5d小鼠胚胎枕中部至第3体节神经管，应用包含碱性纤维生长因子和表皮细胞生长因子的无血清培养基培养，利用MTT法检测细胞增殖能力，利用流式细胞仪检测细胞周期，采用转录激活因子2α(AP-2α，Activator protein-2α)作为其生物学标记物，观察其增殖状况、细胞周期、迁移、分化等生物学特性。

According to the change of chromatin and morphology of cells, the spermatogenesis could be divided into five stages: spermatogonium, primary spermatocyte,secondary spermatocyte, spermatid and spermatozoon.

利用透射电镜观察秀丽白虾的精子发生，并根据染色质及细胞形态的变化将精子发生的全过程划分为五个时期，即精原细胞、初级精母细胞、次级精母细胞、精细胞和精子。

According to the changes of the structure of chromatin and the morphology of cell, the process of the typical spermatogenesis of Cipangopaludina chinensis can be divided into five stages: spermatogonium, primary spermatocyte, secondary spermatocyte, spermatid and mature sperm.

中国圆田螺典型精子发生时，根据染色质和细胞形态的变化，可将其发生分为以下五个时期：精原细胞、初级精母细胞、次级精母细胞、精细胞和成熟精子。

A cell from which gametes develop by meiotic division, especially a spermatocyte or an oocyte.

配子母细胞，配子细胞配偶子通过配子减数分裂而发展的细胞，尢指精母细胞或卵母细胞

AR expressed stronger in spermatocytes and spermatogenic cells, ER in germ cells and sperm expressed strong in the second spermatocyte, PR in Leydig cells also expressed stronger.

AR在精母细胞和精细胞中表达较强，ER在精细胞和精子中表达较强，精母细胞中次之，PR在睾丸间质细胞中表达较强。

Results Rabbit conjunctival epithelial cells and fibroblasts can be cultured successfully in vitro, the epitelial cells are polygon or spherical, and the fibrobiasts are long spindle. After cryopreserved for one month, eighty percent of the cells were successfully resuscitated.

结果 兔眼结膜上皮细胞和上皮下成纤维细胞可以在体外成功培养，结膜上皮细胞呈圆形或多角形，成纤维细胞呈长梭形；冻存细胞1个月后复苏成功率达80%。

Spinous layer: the innermost prickle cells are polygon, and from the inside to outside, they become more and more flat, they are connected to granular cells with some space between, besides the spinous process, under normal condition, there is cell tissue fluid that could help the metabolism of cells in between.

棘层：棘细胞自里向外由多角形渐趋扁平，与颗粒细胞相连，各细胞间有一定空隙，除棘突外，在正常情况下，还含有细胞组织液，辅助细胞的新陈代谢。

Methods The peripheral blood lymphocytes were stimulated by Stimulator in order to enhance expression of cytokines .

先用刺激物刺激外周血T细胞，以增加细胞内细胞因子的表达，继用流式细胞仪分析特异性细胞因子表达水平。

This review introduced the study of cell cycle of male and female gametes before fertilization; discussed the question of synergid degeneration; analysed status of research into the movement of both sperm cells in degenerated synergid; and evaluated the preferential fertilization of sperm cells and the egg cell activation of angiosperms.

本文介绍了目前被子植物精、卵细胞融合前后的细胞周期变化、退化助细胞的功能、精细胞在退化助细胞中迁移的研究动态、精细胞的倾向受精和卵细胞的激活等被子植物受精生物学领域中的一些新的研究成果和发展趋势。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。