全文获取类型
收费全文 | 3246篇 |
免费 | 171篇 |
国内免费 | 48篇 |
专业分类
耳鼻咽喉 | 53篇 |
儿科学 | 132篇 |
妇产科学 | 80篇 |
基础医学 | 291篇 |
口腔科学 | 83篇 |
临床医学 | 317篇 |
内科学 | 801篇 |
皮肤病学 | 168篇 |
神经病学 | 153篇 |
特种医学 | 249篇 |
外科学 | 462篇 |
综合类 | 87篇 |
一般理论 | 4篇 |
预防医学 | 191篇 |
眼科学 | 76篇 |
药学 | 140篇 |
中国医学 | 23篇 |
肿瘤学 | 155篇 |
出版年
2023年 | 34篇 |
2022年 | 55篇 |
2021年 | 89篇 |
2020年 | 57篇 |
2019年 | 88篇 |
2018年 | 92篇 |
2017年 | 79篇 |
2016年 | 82篇 |
2015年 | 75篇 |
2014年 | 124篇 |
2013年 | 159篇 |
2012年 | 195篇 |
2011年 | 160篇 |
2010年 | 136篇 |
2009年 | 134篇 |
2008年 | 130篇 |
2007年 | 128篇 |
2006年 | 132篇 |
2005年 | 119篇 |
2004年 | 79篇 |
2003年 | 76篇 |
2002年 | 71篇 |
2001年 | 43篇 |
2000年 | 37篇 |
1999年 | 46篇 |
1998年 | 93篇 |
1997年 | 80篇 |
1996年 | 83篇 |
1995年 | 56篇 |
1994年 | 65篇 |
1993年 | 52篇 |
1992年 | 27篇 |
1991年 | 26篇 |
1990年 | 35篇 |
1989年 | 52篇 |
1988年 | 51篇 |
1987年 | 37篇 |
1986年 | 39篇 |
1985年 | 30篇 |
1984年 | 24篇 |
1983年 | 14篇 |
1982年 | 23篇 |
1981年 | 20篇 |
1980年 | 15篇 |
1979年 | 22篇 |
1978年 | 16篇 |
1977年 | 18篇 |
1976年 | 19篇 |
1975年 | 12篇 |
1973年 | 15篇 |
排序方式: 共有3465条查询结果,搜索用时 0 毫秒
11.
12.
13.
L Abbaso?lu F Gün F T Salman A Celik A Unüvar O G?rgün 《Zeitschrift für Kinderchirurgie》2003,13(4):236-239
The role of surgery in intraabdominal Burkitt's lymphoma remains controversial and different opinions are present in the literature. In our institution, forty patients (30 boys and 10 girls) with intraabdominal Burkitt's lymphoma with ages ranging from 3 to 12 years have been treated and followed from 1989 through 2000. In ten cases, the patients underwent surgery because of their acute abdominal diseases (intestinal obstruction in 5, intussusception in 3, intestinal perforation in one, and acute appendicitis in one). The remaining thirty patients were referred to our clinic because of their abdominal masses, pain, anorexia and fatigue. Twelve children had localized tumors and total resection could be performed. There was one death in this group due to central nervous system involvement during chemotherapy. In the remaining 28 children, extensive intraabdominal diseases were detected. In four of them, debulking procedures were performed, while in 24 children only biopsies could be made; 8 of them underwent a second-look operation. In the debulking procedures group, two children were lost (50 %) due to tumorlysis and acute renal failure. In the biopsy group, there were six deaths (25 %). All patients received chemotherapy after operative recovery. In conclusion, our results suggest that when the tumor is localized, total resection results in a good outcome. However, in the presence of extensive intraabdominal diseases instead of resection, the operation should be limited to biopsy only. 相似文献
14.
15.
Primary hydatid disease of the intestinal mesentery is rare. We report on a 12-year-old male patient who presented with abdominal pain and urticaria lesions after blunt abdominal trauma. At laparotomy the cyst was found to be ruptured and was totally removed from the surrounding mesenteric tissue.The postoperative course was uneventful. This case is the first child reported with traumatic rupture of a hydatid cyst in a mesenteric location. 相似文献
16.
Rupture of an intra-aortic balloon counterpulsator (IABCP) demands immediate removal. We report a case of thrombus formation within a Datascope IABCP secondary to IABCP rupture, necessitating surgical exploration for removal. There is a disturbing pattern of balloon ruptures with this type of IABCP. 相似文献
17.
18.
19.
Verschuren MC; Blom B; Bogers AJ; Spits H; van Dongen JJ 《International immunology》1998,10(12):1873-1880
Recombination of deltaRec to psiJalpha will delete the TCR delta gene,
which is thought to play an important role in the bifurcation of the TCR
alphabeta versus TCR gammadelta differentiation lineages. We recently
detected a DNA-binding protein in human thymocytes, the so- called PJA-BP,
which recognizes the psiJalpha gene segment and might be one of the factors
involved in the regulation of preferential deltaRec- psiJalpha
rearrangements. We now investigate PJA-BP expression and its correlation
with TCR delta gene deletion in thymocytes. Our electrophoretic mobility
shift assay experiments showed that the PJA-BP is evolutionary conserved in
human, murine and simian thymocytes. Using a large series of human
hematopoietic malignancies (n = 30), we conclude that PJA-BP expression is
thymocyte specific and seems to be restricted to thymocytes committed to
the TCR alphabeta lineage. Analysis of seven well-defined human thymocyte
subpopulations showed that preferential deltaRec-psiJalpha rearrangements
as well as PJA-BP expression can be detected from the immature
CD34-/CD1+/CD3- /CD4+/CD8alpha+beta- thymocyte differentiation stage
onwards. These experiments indicate that expression of PJA-BP in human
thymocytes starts simultaneously with preferential deltaRec-psiJalpha
rearrangements, which supports our hypothesis that PJA-BP is one of the
factors involved in the preferential recombination of deltaRec to
psiJalpha.
相似文献
20.