全文获取类型
收费全文 | 1742篇 |
免费 | 103篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 19篇 |
儿科学 | 19篇 |
妇产科学 | 8篇 |
基础医学 | 172篇 |
口腔科学 | 24篇 |
临床医学 | 111篇 |
内科学 | 539篇 |
皮肤病学 | 17篇 |
神经病学 | 147篇 |
特种医学 | 47篇 |
外科学 | 433篇 |
综合类 | 3篇 |
预防医学 | 34篇 |
眼科学 | 9篇 |
药学 | 81篇 |
中国医学 | 2篇 |
肿瘤学 | 200篇 |
出版年
2024年 | 2篇 |
2023年 | 16篇 |
2022年 | 16篇 |
2021年 | 63篇 |
2020年 | 45篇 |
2019年 | 51篇 |
2018年 | 60篇 |
2017年 | 58篇 |
2016年 | 61篇 |
2015年 | 61篇 |
2014年 | 70篇 |
2013年 | 62篇 |
2012年 | 113篇 |
2011年 | 137篇 |
2010年 | 78篇 |
2009年 | 41篇 |
2008年 | 105篇 |
2007年 | 112篇 |
2006年 | 133篇 |
2005年 | 121篇 |
2004年 | 108篇 |
2003年 | 80篇 |
2002年 | 78篇 |
2001年 | 14篇 |
2000年 | 7篇 |
1999年 | 19篇 |
1998年 | 23篇 |
1997年 | 15篇 |
1996年 | 17篇 |
1995年 | 17篇 |
1994年 | 10篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 7篇 |
1987年 | 7篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1981年 | 6篇 |
1980年 | 4篇 |
1977年 | 3篇 |
1974年 | 2篇 |
1971年 | 1篇 |
1968年 | 1篇 |
1967年 | 2篇 |
1965年 | 1篇 |
排序方式: 共有1865条查询结果,搜索用时 15 毫秒
21.
Keiji Kushibe Sogo Iioka Kunimoto Nezu Takashi Tojo Noriyoshi Sawabata Soichiro Kitamura 《Surgery today》1995,25(4):334-337
In this study, the prognostic value of determining the nuclear DNA content of thymomas by flow cytometry was evaluated. Of a total 31 resected thymomas, 10 (32%) showed DNA aneuploidy, the presence of which was significantly correlated with an advanced clinical stage of disease. The patients with an aneuploid tumor had a poorer prognosis than those with a diploid tumor, demonstrating a survival rate of 50% at 7 postoperative years, which was considerably less favorable than that of the patients with a diploid tumor, being 100% in the same period (p<0.05). Moreover, patients with a high DNA index (DI), i.e., a DI1.5, tended to have a poorer prognosis than those with a low DI. These findings indicated that the DNA content can be an important prognostic index in patients with thymomas. 相似文献
22.
23.
Toshiaki Watanabe Takamitsu Kanazawa Yoshihiro Kazama Junichiro Tanaka Toshiaki Tanaka Soichiro Ishihara Hirokazu Nagawa 《Journal of clinical oncology》2005,23(35):9031-2; author reply 9032-3
24.
Takeshi Yoshida Go Suzuki Masashi Nibuya Shin-ya Sano Soichiro Nomura 《Nihon shinkei seishin yakurigaku zasshi》2004,24(1):29-31
Although still controversial, iron deficiency has been indicated as one of the risk factors for developing neuroleptic-induced extrapyramidal symptoms (EPSs), including akathisia, dystonia, and neuroleptic malignant syndrome. Here we report our experience of iron supplementation and alternating neuroleptics for treating Parkinsonism in a schizophrenic female patient having severe iron deficient anemia. 相似文献
25.
Histological analysis of vasculopathy associated with pulmonary hypertension in combined pulmonary fibrosis and emphysema: comparison with idiopathic pulmonary fibrosis or emphysema alone 下载免费PDF全文
26.
27.
Results of a 36‐year surveillance program for ulcerative colitis‐associated neoplasia in the Japanese population 下载免费PDF全文
Junko Kishikawa Keisuke Hata Shinsuke Kazama Hiroyuki Anzai Takahide Shinagawa Koji Murono Manabu Kaneko Kazuhito Sasaki Koji Yasuda Kensuke Otani Takeshi Nishikawa Toshiaki Tanaka Tomomichi Kiyomatsu Kazushige Kawai Hiroaki Nozawa Soichiro Ishihara Teppei Morikawa Masashi Fukayama Toshiaki Watanabe 《Digestive endoscopy》2018,30(2):236-244
28.
Kazufumi Kobayashi Hitoshi Maruyama Soichiro Kiyono Osamu Yokosuka Masayuki Ohtsuka Masaru Miyazaki Jun Matsushima Takashi Kishimoto Yukio Nakatani 《Ultrasound in medicine & biology》2017,43(10):2151-2158
This retrospective study aimed to assess the diagnostic performance of contrast-enhanced ultrasound with Sonazoid (S-CEUS) for liver metastasis. We enrolled in this study 98 patients with 148 histologically proven liver lesions, with 121 metastases and 27 non-metastases. The S-CEUS technique showed sensitivity in 95.0% (115 of 121), specificity in 44.4% (12 of 27) and accuracy in 85.8% (127 of 148) for the diagnosis of metastasis. Higher body mass index had a negative influence on the positive predictive value and accuracy, and a greater depth of the lesion had a negative influence on the accuracy. The management was changed in 8 patients (8.2%) because of S-CEUS findings. In conclusion, the addition of S-CEUS may offer a great benefit by improvement of the quality of diagnosis and management for patients with cancer who have a tentative diagnosis of liver metastasis by contrast-enhanced computed tomography. 相似文献
29.
Kazumi Urata Ikko Kajihara Tselmeg Mijiddorj Myangat Yukino Tasaki Saki Otsuka‐Maeda Soichiro Sawamura Saori Kanazawa‐Yamada Ryoko Sakamoto Katsunari Makino Jun Aoi Toshikatsu Igata Takamitsu Makino Shinichi Masuguchi Satoshi Fukushima Masatoshi Jinnin Hironobu Ihn 《The Journal of dermatology》2019,46(5):444-448
Cyclin‐dependent kinase 4 and 6 (CDK4/6) plays an important role in cell cycle progression, and the CDK4/6–cyclin D1 complex controls the cell cycle transition from G1 phase to S phase. CDK4 is enhanced in several types of cancers and CDK4/6 inhibitors attenuate the proliferation of several types of cancer in vitro/in vivo. The purpose of our study was to investigate the expression pattern of CDK4 and evaluate its clinical importance in extramammary Paget's disease (EMPD). Almost all EMPD tissues were positive for CDK4, and metastatic lesions had a similar immunostaining intensity to primary lesions. In addition, CDK4 protein levels were positively correlated with those of cyclin D1 protein. Taken together, CDK4 may assume a crucial role in EMPD progression. 相似文献
30.
Case of lichenoid‐lichen scrofulosorum: A rare variety of lichen scrofulosorum mimicking lichen planus in an elderly patient 下载免费PDF全文