全文获取类型
收费全文 | 1058篇 |
免费 | 63篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 45篇 |
妇产科学 | 5篇 |
基础医学 | 83篇 |
口腔科学 | 9篇 |
临床医学 | 106篇 |
内科学 | 275篇 |
皮肤病学 | 9篇 |
神经病学 | 28篇 |
特种医学 | 243篇 |
外科学 | 94篇 |
综合类 | 41篇 |
预防医学 | 74篇 |
眼科学 | 4篇 |
药学 | 54篇 |
中国医学 | 1篇 |
肿瘤学 | 66篇 |
出版年
2022年 | 3篇 |
2021年 | 10篇 |
2020年 | 11篇 |
2019年 | 6篇 |
2018年 | 12篇 |
2017年 | 7篇 |
2016年 | 15篇 |
2015年 | 10篇 |
2014年 | 10篇 |
2013年 | 28篇 |
2012年 | 26篇 |
2011年 | 24篇 |
2010年 | 23篇 |
2009年 | 33篇 |
2008年 | 31篇 |
2007年 | 33篇 |
2006年 | 29篇 |
2005年 | 35篇 |
2004年 | 20篇 |
2003年 | 35篇 |
2002年 | 30篇 |
2001年 | 23篇 |
2000年 | 30篇 |
1999年 | 25篇 |
1998年 | 53篇 |
1997年 | 50篇 |
1996年 | 41篇 |
1995年 | 27篇 |
1994年 | 41篇 |
1993年 | 31篇 |
1992年 | 20篇 |
1991年 | 28篇 |
1990年 | 17篇 |
1989年 | 41篇 |
1988年 | 27篇 |
1987年 | 29篇 |
1986年 | 39篇 |
1985年 | 18篇 |
1984年 | 21篇 |
1983年 | 19篇 |
1982年 | 16篇 |
1981年 | 27篇 |
1980年 | 7篇 |
1979年 | 18篇 |
1978年 | 14篇 |
1977年 | 11篇 |
1976年 | 12篇 |
1975年 | 10篇 |
1974年 | 3篇 |
1937年 | 2篇 |
排序方式: 共有1139条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
6.
Intestinal schistosomiasis japonica: CT-pathologic correlation 总被引:1,自引:0,他引:1
Lee RC; Chiang JH; Chou YH; Rubesin SE; Wu HP; Jeng WC; Hsu CC; Tiu CM; Chang T 《Radiology》1994,193(2):539
7.
Ajit K. Shah Richard C. Brundage Kathleen D. Lake Ronald J. Sawchuk 《Biopharmaceutics & drug disposition》1995,16(1):59-70
We estimated the free fraction (fu) of cyclosporine (CyA) in the plasma from concentrations of CyA in urine (Cu) and plasma (Cp), urine flow rate (UF), and glomerular filtration rate in rabbits and in heart transplant patients. Following intravenous administration of CyA (5–30 mg kg?1) in ten NZW rabbits and oral administration of CyA (4.8–12.1 mg kg?1) in nine heart transplant patients, CyA concentrations in urine and plasma were measured by HPLC. The ratios of Cu to Cp and UF data were fitted to a physiological model of renal clearance using NONMEM. The free fraction of cyclosporine in the rabbits and the heart transplant patients was 0.0122 and 0.14, respectively. Because of the relatively low permeability of CyA across the tubular epithelium, no apparent equilibrium between Cu and Cp at any urine flow rate was reached and, therefore, the Cu to Cp ratio will not be equal to fu. 相似文献
8.
9.
Quantitative study of the immunoglobulin-containing cells in trephine samples of bone marrow
下载免费PDF全文
![点击此处可从《Journal of clinical pathology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Immunoglobulin (Ig) was demonstrated in paraffin sections of 12 trephine bone marrow biopsies by means of the unlabelled antibody peroxidase-antiperoxidase (PAP) method. The Ig-containing cells, which were counted with the Reichert-Jung (Kontron) MOP-AMO3 user-controlled image-analyser, were found to constitute approximately 4·2% of all the nucleated cells in the marrow, a figure significantly higher than those reported by previous workers. 相似文献
10.
D S Burke J F Brundage J R Herbold W Berner L I Gardner J D Gunzenhauser J Voskovitch R R Redfield 《The New England journal of medicine》1987,317(3):131-136
During the six months from October 1985 through March 1986, blood samples from 306,061 civilian applicants for military service from the United States were tested for antibody to the human immunodeficiency virus (HIV). Four hundred sixty subjects were positive for the antibody as determined by Western (immune) blot reactivity. The mean prevalence of HIV infection in this population of teenagers and young adults was thus 1.50 per 1000. According to multivariate analysis, the following demographic factors were found to be significant independent predictors of a positive HIV-antibody test: age (adjusted odds ratio = 1.10 per year), black race (adjusted odds ratio = 2.04), male sex (adjusted odds ratio = 1.84), residence in a densely populated county (adjusted odds ratio = 1.05 per 1000 per square mile), and residence in a metropolitan area with a high incidence of the acquired immunodeficiency syndrome (adjusted odds ratio = 1.53). Antibody-positive applicants were identified in 43 of the 50 states. Counties with high prevalence rates for HIV (greater than 5 per 1000) were located in New York State (four counties), New Jersey (three counties), California (two counties), Maryland (two counties), and Texas, Colorado, and Washington, D.C. 相似文献