全文获取类型
收费全文 | 1204篇 |
免费 | 99篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 56篇 |
妇产科学 | 23篇 |
基础医学 | 191篇 |
口腔科学 | 72篇 |
临床医学 | 148篇 |
内科学 | 194篇 |
皮肤病学 | 5篇 |
神经病学 | 63篇 |
特种医学 | 84篇 |
外科学 | 182篇 |
综合类 | 27篇 |
预防医学 | 86篇 |
眼科学 | 3篇 |
药学 | 87篇 |
中国医学 | 1篇 |
肿瘤学 | 79篇 |
出版年
2021年 | 17篇 |
2020年 | 16篇 |
2019年 | 23篇 |
2018年 | 22篇 |
2017年 | 16篇 |
2016年 | 18篇 |
2015年 | 27篇 |
2014年 | 30篇 |
2013年 | 41篇 |
2012年 | 53篇 |
2011年 | 63篇 |
2010年 | 34篇 |
2009年 | 43篇 |
2008年 | 56篇 |
2007年 | 53篇 |
2006年 | 39篇 |
2005年 | 44篇 |
2004年 | 43篇 |
2003年 | 40篇 |
2002年 | 32篇 |
2001年 | 48篇 |
2000年 | 29篇 |
1999年 | 31篇 |
1998年 | 17篇 |
1997年 | 18篇 |
1996年 | 27篇 |
1995年 | 23篇 |
1994年 | 15篇 |
1993年 | 10篇 |
1992年 | 29篇 |
1991年 | 30篇 |
1990年 | 17篇 |
1989年 | 16篇 |
1988年 | 13篇 |
1987年 | 21篇 |
1986年 | 27篇 |
1985年 | 15篇 |
1984年 | 16篇 |
1983年 | 13篇 |
1982年 | 16篇 |
1981年 | 16篇 |
1980年 | 9篇 |
1979年 | 11篇 |
1978年 | 11篇 |
1977年 | 9篇 |
1976年 | 10篇 |
1973年 | 12篇 |
1972年 | 13篇 |
1970年 | 8篇 |
1966年 | 8篇 |
排序方式: 共有1309条查询结果,搜索用时 140 毫秒
1.
2.
A W Biglan R Gonnering L B Lockhart B Rabin F H Fuerste 《American journal of ophthalmology》1986,101(2):232-235
To test the possibility of the formation of an antibody to botulinum A toxin after multiple injections of this potent neurotoxin, we collected serum samples from 28 patients who received 57 doses. These injections over a nine-month period with as much as 50 units per injection formed no detectable antibody. 相似文献
3.
4.
5.
Chemotherapeutics have been shown to have detrimental effects on immune response, hence, pretreatment or concurrent use of an immune augmentation substance could lead to reconstitution of an immune response such as cytolytic activity after administration of chemotherapeutic agent. Previously, in an in vitro system, we have demonstrated IL-2 pretreatment reconstituted drug induced immunosuppression as well as altered differential sensitivities to chemotherapeutic agents. This study presents evidence that in vivo functional cytolytic potential can be retained by IL-2 pretreatment on chemotherapeutically-induced natural cytolytic hyporesponsiveness. 相似文献
6.
7.
8.
9.
Two hundred and three human volunteers were tested for evidence of sensitization to several plasticizers following 3 weeks of dermal application three times a week. Tris(2-ethylhexyl)mellitate (TOTM; 1%, v/v), 2,2,4-trimethyl-1,3-pentanediol-diisobutyrate (TXIB; 1%, v/v), di(2-ethylhexyl)terephthalate (DEHT; 0.5%, v/v) and diethylphthalate (DEP; 2%, v/v) were applied to the skin of volunteers under semi-occlusive patch for 3 consecutive weeks and the reactions to a challenge application noted following a 2-week rest period. Slight erythema was observed in four individuals exposed to TOTM, two of which resolved within 96 h and one that occurred only after 96 h. Slight erythema was noted in three subjects exposed to TXIB, one of which resolved by 96 h and one that occurred only after 96 h. Two subjects had slight erythema to DEHT, one that resolved by 96 h and one that occurred only after 96 h. One reaction occurred with DEP at 96 h after challenge. Of the positive responses, one subject reacted to all test substances. No subject had a response grade of 1.0 or greater. Because of the low response, the overall conclusion is that none of the plasticizers demonstrated evidence of sensitization or irritation. 相似文献
10.
The overlooked, retained double J stent 总被引:2,自引:0,他引:2
M.D.Lester Persky M.DJorge J. Lockhart M.D.Robert Karp M.D.Mohamed Helal M.D.Said Hakki 《Urology》1990,36(6):519-521
A series of 4 patients with long overlooked, retained ureteral stents is presented to illustrate the variable, unpredictable, and at times, hazardous course of such patients. These cases are cited to re-emphasize the need for careful documentation, observation, and follow-up of patients in whom stents are placed. 相似文献