全文获取类型
收费全文 | 1079篇 |
免费 | 79篇 |
国内免费 | 39篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 50篇 |
妇产科学 | 15篇 |
基础医学 | 170篇 |
口腔科学 | 19篇 |
临床医学 | 122篇 |
内科学 | 223篇 |
皮肤病学 | 11篇 |
神经病学 | 36篇 |
特种医学 | 188篇 |
外科学 | 135篇 |
综合类 | 24篇 |
预防医学 | 49篇 |
眼科学 | 14篇 |
药学 | 79篇 |
中国医学 | 1篇 |
肿瘤学 | 57篇 |
出版年
2023年 | 3篇 |
2022年 | 11篇 |
2021年 | 15篇 |
2020年 | 7篇 |
2019年 | 11篇 |
2018年 | 25篇 |
2017年 | 21篇 |
2016年 | 16篇 |
2015年 | 12篇 |
2014年 | 30篇 |
2013年 | 22篇 |
2012年 | 24篇 |
2011年 | 39篇 |
2010年 | 33篇 |
2009年 | 40篇 |
2008年 | 24篇 |
2007年 | 50篇 |
2006年 | 29篇 |
2005年 | 28篇 |
2004年 | 21篇 |
2003年 | 27篇 |
2002年 | 35篇 |
2001年 | 30篇 |
2000年 | 25篇 |
1999年 | 40篇 |
1998年 | 63篇 |
1997年 | 54篇 |
1996年 | 42篇 |
1995年 | 36篇 |
1994年 | 32篇 |
1993年 | 37篇 |
1992年 | 20篇 |
1991年 | 28篇 |
1990年 | 17篇 |
1989年 | 31篇 |
1988年 | 22篇 |
1987年 | 29篇 |
1986年 | 15篇 |
1985年 | 23篇 |
1984年 | 18篇 |
1983年 | 15篇 |
1982年 | 14篇 |
1981年 | 16篇 |
1980年 | 18篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1976年 | 8篇 |
1975年 | 5篇 |
1974年 | 3篇 |
1973年 | 4篇 |
排序方式: 共有1197条查询结果,搜索用时 15 毫秒
1.
2.
Sheela R Geraghty Barbara S Davidson Barbara B Warner Amy L Sapsford Jeanne L Ballard Betsy A List Rachel Akers Ardythe L Morrow 《Journal of human lactation》2005,21(1):59-66
Although there are well-established clinical human milk banks in the United States, there are no milk banks specifically intended to foster research on human milk. The authors' goal was to establish a milk bank with a core data set to support exploratory and hypothesis-driven studies on human milk. Donations to the Cincinnati Children's Research Human Milk Bank are accepted within the context of ongoing, hypothesis-driven research or on an ad hoc basis. Donors must give informed consent, and scientists wishing to use the samples must have Institutional review board approval for their use. Development of more research human milk banks can potentially provide resources for multidisciplinary collaboration and advance the study of human milk and lactation. 相似文献
3.
4.
Steven G. E. Marsh Ekkehard D. Albert Walter F. Bodmer Ronald E. Bontrop Bo Dupont Henry A. Erlich Daniel E. Geraghty John A. Hansen Bernard Mach Wolfgang R. Mayr Peter Parham Effie W. Petersdorf Takehiko Sasazuki Geziena M. Th. Schreuder Jack L. Strominger Arne Svejgaard Paul I. Terasaki 《International journal of immunogenetics》2002,29(6):463-515
5.
6.
Normal and diseased isolated lungs: high-resolution CT 总被引:8,自引:0,他引:8
7.
E I Traboulsi J C Silva M T Geraghty I H Maumenee D Valle W R Green 《American journal of ophthalmology》1992,113(3):269-280
The eyes of a 22-month-old girl with the cobalamin C complementation type of combined methylmalonic aciduria and homocystinuria were studied with light and electron microscopy. We observed vacuolization of the iris pigment epithelium, loss of photoreceptors in the central 3.3 mm of the macula, partial loss of the nerve fiber and ganglion cell layers between the fovea and optic disk, and partial optic atrophy. The sclera in the posterior pole was thickened with deposition of mucopolysaccharide. Electron microscopy showed inclusions containing fine granular material in conjunctival fibrocytes; corneal epithelium, keratocytes, and endothelial cells; iris pigment epithelium; ganglion cells; retinal pigment epithelium; and choroid and scleral fibrocytes. Enlarged mitochondria and clear vacuoles distended the corneal endothelial cells. We found evidence of possible lysosomal dysfunction and mucopolysaccharide storage, as well as a clinicopathologic correlation of the macular degeneration in this disease. 相似文献
8.
9.
The adhesion of hematopoietic progenitor cells to bone marrow stromal cells is critical to hematopoiesis and involves multiple effector molecules. Stromal cell molecules that participate in this interaction were sought by analyzing the detergent-soluble membrane proteins of GBI/6 stromal cells that could be adsorbed by intact FDCP-1 progenitor cells. A single-chain protein from GBI/6 cells having an apparent molecular weight of 37 Kd was selectively adsorbed by FDCP-1 cells. This protein, designated p37, could be surface-radiolabeled and thus appeared to be exposed on the cell membrane. An apparently identical 37- Kd protein was expressed by three stromal cell lines, by Swiss 3T3 fibroblastic cells, and by FDCP-1 and FDCP-2 progenitor cells. p37 was selectively adsorbed from membrane lysates by a variety of murine hematopoietic cells, including erythrocytes, but not by human erythrocytes. Binding of p37 to cells was calcium-dependent, and was not affected by inhibitors of the hematopoietic homing receptor or the cell-binding or heparin-binding functions of fibronectin. It is proposed that p37 may be a novel adhesive molecule expressed on the surface of a variety of hematopoietic cells that could participate in both homotypic and heterotypic interactions of stromal and progenitor cells. 相似文献
10.