全文获取类型
收费全文 | 257068篇 |
免费 | 36483篇 |
国内免费 | 2996篇 |
专业分类
耳鼻咽喉 | 6194篇 |
儿科学 | 8836篇 |
妇产科学 | 5001篇 |
基础医学 | 18924篇 |
口腔科学 | 5455篇 |
临床医学 | 35871篇 |
内科学 | 70445篇 |
皮肤病学 | 9822篇 |
神经病学 | 25387篇 |
特种医学 | 8963篇 |
外国民族医学 | 1篇 |
外科学 | 50346篇 |
综合类 | 624篇 |
一般理论 | 51篇 |
预防医学 | 17147篇 |
眼科学 | 5065篇 |
药学 | 8846篇 |
中国医学 | 432篇 |
肿瘤学 | 19137篇 |
出版年
2023年 | 5626篇 |
2022年 | 1967篇 |
2021年 | 5795篇 |
2020年 | 8211篇 |
2019年 | 5321篇 |
2018年 | 10880篇 |
2017年 | 9932篇 |
2016年 | 11420篇 |
2015年 | 11793篇 |
2014年 | 20017篇 |
2013年 | 21583篇 |
2012年 | 14801篇 |
2011年 | 15215篇 |
2010年 | 15466篇 |
2009年 | 18427篇 |
2008年 | 13427篇 |
2007年 | 11681篇 |
2006年 | 13507篇 |
2005年 | 10352篇 |
2004年 | 8893篇 |
2003年 | 7195篇 |
2002年 | 6742篇 |
2001年 | 4314篇 |
2000年 | 3377篇 |
1999年 | 3750篇 |
1998年 | 4230篇 |
1997年 | 3893篇 |
1996年 | 3747篇 |
1995年 | 3649篇 |
1994年 | 2363篇 |
1993年 | 1917篇 |
1992年 | 1648篇 |
1991年 | 1630篇 |
1990年 | 1276篇 |
1989年 | 1387篇 |
1988年 | 1218篇 |
1987年 | 998篇 |
1986年 | 1054篇 |
1985年 | 844篇 |
1984年 | 684篇 |
1983年 | 654篇 |
1982年 | 659篇 |
1981年 | 514篇 |
1980年 | 479篇 |
1979年 | 396篇 |
1978年 | 409篇 |
1977年 | 469篇 |
1976年 | 293篇 |
1975年 | 327篇 |
1972年 | 312篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Kara S. Tanaka MD Veronica R. Andaya BA Steven W. Thorpe MD Kenneth R. Gundle MD James B. Hayden MD Yee-Cheen Duong MD Raffi S. Avedian MD David G. Mohler MD Lee J. Morse MD Melissa N. Zimel MD Richard J. O'Donnell MD Andrew Fang MD Robert Lor Randall MD Tina H. Tran BS Christin New BA Rosanna L. Wustrack MD other members of Study Group FORCE 《Journal of surgical oncology》2023,127(1):148-158
3.
Sirufo Maria Maddalena Magnanimi Lina Maria Ginaldi Lia De Martinis Massimo 《Clinical rheumatology》2022,41(12):3921-3922
Clinical Rheumatology - 相似文献
4.
Marco N. Iannone Stefano Stucchi Elia A. Turolla Chiara Beretta Samuele Ciceri Clizia Chinello Lisa Pagani Sergio Todde Patrizia Ferraboschi 《Journal of labelled compounds & radiopharmaceuticals》2022,65(3):48-62
In the last decade, the development of new radiopharmaceuticals for the imaging and therapy of prostate cancer has been a highly active and important area of research, especially focusing on the prostate-specific membrane antigen (PSMA), an antigen which is upregulated in prostate, as well as in other tumor cells. A large variety of PSMA ligands have been radiolabeled, to date. Among the various derivatives, PSMA-617 resulted to be one of the most interesting in terms of interaction with the antigen and clinical properties, and its lutetium-177 labeled version has recently been approved by regulatory agencies for therapeutic purposes. For this reasons, the radiolabeling with fluorine-18 of a PSMA-617 derivative might be of interest. Beside other methodologies to radiolabel macromolecules with fluorine-18, the “click-chemistry” approach resulted to be very useful, and the copper-catalyzed azide-alkyne cycloaddition (CuAAC) is considered one of most efficient and reliable. This paper proposes the synthesis of a suitable precursor for the radiolabeling with fluorine-18 of a new PSMA-617 derivative. The whole radiosynthetic procedure has been fully automated, and the final product, which proved to be stable in plasma, has been obtained with radiochemical yield and purity suitable for subsequent preclinical studies. 相似文献
5.
Andrea Ronchi MD Marco Montella MD Federica Zito Marino BD PhD Giuseppe Argenziano MD PhD Elvira Moscarella MD Gabriella Brancaccio MD Giuseppe Ferraro MD Giovanni Francesco Nicoletti MD Teresa Troiani MD Renato Franco MD PhD Immacolata Cozzolino MD PhD 《Cancer cytopathology》2022,130(1):18-29
Malignant melanoma (MM) is a highly aggressive neoplasm with a growing worldwide incidence. It is not uncommon that the disease is already metastatic at the time of the first diagnosis. Regional lymph nodes and skin are the first and most common metastatic sites, followed by distant visceral sites (lungs, liver, and central nervous system) and bone. In this clinical setting, fine-needle aspiration (FNA) often represents the first diagnostic approach. FNA is a useful tool to obtain a rapid and accurate diagnosis, in conjunction with ancillary techniques and molecular analysis, as recommended by recent guidelines. The aim of this review was to describe the cytomorphology, immunocytochemical tools, and molecular tools used for the diagnosis of MM metastases on FNA. 相似文献
6.
7.
8.
Abou-Dakn Michael Alexy Ute Beyer Kirsten Cremer Monika Ensenauer Regina Flothkötter Maria Geene Raimund Hellmers Claudia Joisten Christine Koletzko Berthold Mata Jutta Schiffner Ulrich Somm Irene Speck Melanie Weißenborn Anke Wöckel Achim 《Monatsschrift für Kinderheilkunde》2022,170(10):925-928
Monatsschrift Kinderheilkunde - 相似文献
9.
10.