全文获取类型
收费全文 | 769篇 |
免费 | 39篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 35篇 |
妇产科学 | 6篇 |
基础医学 | 68篇 |
口腔科学 | 35篇 |
临床医学 | 83篇 |
内科学 | 166篇 |
皮肤病学 | 12篇 |
神经病学 | 6篇 |
特种医学 | 222篇 |
外科学 | 35篇 |
综合类 | 15篇 |
预防医学 | 21篇 |
眼科学 | 15篇 |
药学 | 38篇 |
肿瘤学 | 53篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 5篇 |
2019年 | 2篇 |
2018年 | 9篇 |
2017年 | 8篇 |
2016年 | 7篇 |
2015年 | 11篇 |
2014年 | 18篇 |
2013年 | 18篇 |
2012年 | 17篇 |
2011年 | 13篇 |
2010年 | 31篇 |
2009年 | 28篇 |
2008年 | 13篇 |
2007年 | 21篇 |
2006年 | 8篇 |
2005年 | 16篇 |
2004年 | 10篇 |
2003年 | 3篇 |
2002年 | 9篇 |
2001年 | 7篇 |
2000年 | 5篇 |
1999年 | 10篇 |
1998年 | 46篇 |
1997年 | 56篇 |
1996年 | 51篇 |
1995年 | 49篇 |
1994年 | 46篇 |
1993年 | 31篇 |
1992年 | 12篇 |
1991年 | 9篇 |
1990年 | 12篇 |
1989年 | 20篇 |
1988年 | 30篇 |
1987年 | 13篇 |
1986年 | 30篇 |
1985年 | 26篇 |
1984年 | 12篇 |
1983年 | 18篇 |
1982年 | 18篇 |
1981年 | 10篇 |
1980年 | 10篇 |
1979年 | 2篇 |
1978年 | 6篇 |
1977年 | 10篇 |
1976年 | 15篇 |
1975年 | 4篇 |
1969年 | 1篇 |
排序方式: 共有814条查询结果,搜索用时 15 毫秒
811.
BACKGROUND: Because the Rh antigens E (Rh3) and c (Rh4) are relatively immunogenic, it has been suggested that R1R1 (E-, c-) patients who present with anti-E alone receive prophylactic c- (Rh: -4) red cell transfusions. STUDY DESIGN AND METHODS: To determine the utility of this approach, the transfusion records of 100 consecutive R1R1 patients with anti-E identified over a 6-year period were reviewed. RESULTS: Thirty-two (32%) had anti-c concurrent with anti-E. Twenty-seven of the 68 patients who presented with anti-E alone received random (i.e., not typed for c [Rh4]) red cell transfusions. Five (18.5%) of the 27 subsequently developed anti-c 13 to 193 days (mean, 50) after transfusion of 2 to 14 (mean, 8) red cell units. None of the five had clinical evidence of hemolysis that could be attributed to a delayed hemolytic transfusion reaction. Twenty-two (81.5%) of the 27 failed to develop anti-c even after transfusion of 1 to 41 (mean, 9; median, 7) red cell units. CONCLUSION: The overall rate of immunization to c (Rh4) antigen in R1R1 patients with anti-E was 37 percent. Production of anti- c following transfusion to R1R1 patients with anti-E occurred in 18.5 percent of the cases in this series, which could have been avoided by the prophylactic use of R1R1 (E-, c-) blood for transfusion. The prophylactic use of c- (Rh: -4) blood in this patient population may be justified by the high immunization rate and the potential risk of delayed hemolytic transfusion reaction. 相似文献
812.
PM Mannucci ; K Schimpf ; T Abe ; LM Aledort ; K Anderle ; DB Brettler ; MW Hilgartner ; PB Kernoff ; M Kunschak ; CW McMillan ; et al. 《Transfusion》1992,32(2):134-138
A multicenter prospective study was carried out to evaluate whether a vapor-heated factor VIII concentrate transmitted blood-borne viral infections over a surveillance period of 15 months. Thirty-five patients with hemophilia and von Willebrand disease who had never received any blood components were treated. Twenty-eight were analyzed and found not to have non-A, non-B hepatitis. Sera from 20 of these 28 patients were also tested for the antibody to the hepatitis C virus. None had sero-converted during the follow-up period. None of the patients analyzed developed markers of the hepatitis B virus (n = 17) or the human immunodeficiency virus (n = 31). This vapor-heated factor VIII concentrate carries a low risk of transmitting hepatitis and human immunodeficiency virus infection. 相似文献
813.
814.
Rosaria Gesuita PhD Ivana Rabbone MD Vittorio Marconi MD Luisa De Sanctis MD Monica Marino RD Valentina Tiberi MD Antonio Iannilli MD Davide Tinti MD Lucia Favella PM Carlo Giorda MD Flavia Carle PhD Valentino Cherubini MD 《Diabetes, obesity & metabolism》2023,25(6):1698-1703