全文获取类型
收费全文 | 289篇 |
免费 | 5篇 |
专业分类
林业 | 15篇 |
农学 | 12篇 |
36篇 | |
综合类 | 11篇 |
农作物 | 12篇 |
水产渔业 | 33篇 |
畜牧兽医 | 120篇 |
园艺 | 3篇 |
植物保护 | 52篇 |
出版年
2022年 | 4篇 |
2021年 | 4篇 |
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 1篇 |
2017年 | 6篇 |
2016年 | 8篇 |
2015年 | 7篇 |
2014年 | 13篇 |
2013年 | 12篇 |
2012年 | 19篇 |
2011年 | 23篇 |
2010年 | 7篇 |
2009年 | 13篇 |
2008年 | 19篇 |
2007年 | 29篇 |
2006年 | 9篇 |
2005年 | 21篇 |
2004年 | 25篇 |
2003年 | 16篇 |
2002年 | 17篇 |
2001年 | 6篇 |
2000年 | 8篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1975年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有294条查询结果,搜索用时 15 毫秒
291.
292.
Summary Haploid plants (2n=12) were produced by anther culture from the tuber-bearing wild speciesS. verrucosum. 相似文献
293.
Saishu YOSHIDA Hideaki YURINO Masaaki KOBAYASHI Naoto NISHIMURA Kentaro YANO Ken FUJIWARA Shin-ichi HASHIMOTO Takako KATO Yukio KATO 《The Journal of reproduction and development》2022,68(3):225
Pituitary endocrine cells are supplied by Sox2-expressing stem/progenitor cells in the anterior lobe of the adult pituitary gland. These SOX2-positive cells are maintained in two types of microenvironments (niches): the marginal cell layer (MCL)-niche and the parenchymal-niche. Recently, we isolated dense SOX2-positive cell clusters from the parenchymal-niche by taking advantage of their resistance to protease treatment as parenchymal stem/progenitor cell (PS)-clusters. In the present study, by analyzing these isolated PS-clusters, we attempted to identify novel structural characteristics of pituitary stem/progenitor cell niches. Quantitative real-time PCR showed that tight junction-related genes were distinctly expressed in the isolated PS-clusters. Immunocytostaining showed that the tight junction molecules, ZO-1 and occludin, were localized in the apical membrane facing the pseudo-follicle-like structure of the isolated PS-clusters regardless of the expression of S100β, which distinguishes the sub-population of SOX2-positive cells. Furthermore, immunohistochemistry of the pituitary glands of adult rats clearly demonstrated that ZO-1 and occludin were densely present in the parenchymal-niche encircling the pseudo-follicle, while they were observed in the apical membrane in the MCL-niche facing the residual lumen. Collectively, these tight junction-related proteins might be involved in the architecture and maintenance of the plasticity of pituitary stem/progenitor cell niches. 相似文献