全文获取类型
收费全文 | 26827篇 |
免费 | 553篇 |
国内免费 | 52篇 |
专业分类
耳鼻咽喉 | 770篇 |
儿科学 | 574篇 |
妇产科学 | 2153篇 |
基础医学 | 3674篇 |
口腔科学 | 990篇 |
临床医学 | 1019篇 |
内科学 | 4973篇 |
皮肤病学 | 864篇 |
神经病学 | 2319篇 |
特种医学 | 354篇 |
外科学 | 2812篇 |
综合类 | 100篇 |
一般理论 | 1篇 |
预防医学 | 1807篇 |
眼科学 | 1113篇 |
药学 | 3040篇 |
中国医学 | 33篇 |
肿瘤学 | 836篇 |
出版年
2022年 | 351篇 |
2021年 | 626篇 |
2020年 | 180篇 |
2019年 | 293篇 |
2018年 | 488篇 |
2017年 | 331篇 |
2016年 | 366篇 |
2015年 | 417篇 |
2014年 | 609篇 |
2013年 | 826篇 |
2012年 | 1121篇 |
2011年 | 1304篇 |
2010年 | 635篇 |
2009年 | 357篇 |
2008年 | 814篇 |
2007年 | 1060篇 |
2006年 | 1135篇 |
2005年 | 1054篇 |
2004年 | 1140篇 |
2003年 | 1114篇 |
2002年 | 928篇 |
2001年 | 707篇 |
2000年 | 684篇 |
1999年 | 583篇 |
1998年 | 186篇 |
1992年 | 378篇 |
1991年 | 324篇 |
1990年 | 363篇 |
1989年 | 413篇 |
1988年 | 469篇 |
1987年 | 454篇 |
1986年 | 465篇 |
1985年 | 438篇 |
1984年 | 354篇 |
1983年 | 259篇 |
1979年 | 531篇 |
1978年 | 317篇 |
1977年 | 257篇 |
1976年 | 248篇 |
1975年 | 341篇 |
1974年 | 518篇 |
1973年 | 516篇 |
1972年 | 432篇 |
1971年 | 409篇 |
1970年 | 389篇 |
1969年 | 409篇 |
1968年 | 356篇 |
1967年 | 274篇 |
1966年 | 291篇 |
1965年 | 176篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
W Kostowski E Malatyńska A P?a?nik W Dyr W Danysz 《Polish journal of pharmacology and pharmacy》1986,38(5-6):471-481
Alprazolam, a new benzodiazepine from triazolobenzodiazepine group, produced anxiolytic action in the conflict test with potency similar to that of diazepam. The myorelaxant activity of the drug was relatively weak. Unlike desipramine, alprazolam failed to reduce the immobility of rats in the forced swim test and was unable to prevent clonidine-induced hypothermia. Alprazolam, unlike desipramine, failed also to potentiate behavioral effect of noradrenaline injected into the hippocampus. Alprazolam after acute but not chronic administration antagonized the synchronizing effect of clonidine on EEG pattern. On the other hand, alprazolam similarly to tricyclic antidepressants, prevented the suppression of dominance behavior by clonidine in rats competing for food. The results indicate that alprazolam acts only weakly upon noradrenergic mechanisms related to depression and to antidepressant action of drugs. 相似文献
53.
B Bechcińska S Sporny E Witczak 《Zentralblatt für allgemeine Pathologie und pathologische Anatomie》1986,132(4):307-311
A case of primary malignant lymphoma of the eye in a 78-year-old woman is reported. A centroblastic non-Hodgkin lymphoma showed prominent involvement of the retina with massive serous retinal detachment. A review of the literature is given. 相似文献
54.
55.
56.
57.
Piotr K?osiński Maciej Gilis-Januszewski Witold Serafin 《Chirurgia narzadów ruchu i ortopedia polska》2004,69(3):167-172
Early results (12 weeks after surgery) of the lumbar spinal stenosis operative treatment were assessed in the group of 36 patients (aged 40-65 years). In 72% of patients posterior fusion was applied. In the results evaluation lumbar pain, low extremities pain, neurogenic claudicat ion, sensory disturbances and functional status were taken in account. A significant decrease in low extremities and lumbar pain was observed. Some sensory disturbances after operative treatment did not affect general high patients assessment of the performed surgical procedures (positive 80.5% cases). 相似文献
58.
59.
The new technique, polymerase chain reaction, used for in vitro DNA fragments amplification is described. The conditions of the reaction and methods of data analysis are discussed as well as the usefulness of this technique in research and medical practice. 相似文献
60.
This article contains the review and the critical discussion of studies of T and B lymphocytes in chronic B-cell lymphocytic leukaemia. It is not explicitly known now, which stage of differentiation of lympho-haemopoietic cells undergoes malignant transformation in CLL-B. Basing on VDJ recombination activity it is supposed that some cases derive from the stem cell, others--from B lineage cells. 相似文献