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排序方式: 共有1757条查询结果,搜索用时 62 毫秒
71.
Eriko Yanagida Hiroaki Miyoshi Mai Takeuchi Noriaki Yoshida Kazutaka Nakashima Kyohei Yamada Takeshi Umeno Yasumasa Shimasaki Takuya Furuta Masao Seto Koichi Ohshima 《Hematological oncology》2020,38(5):680-688
The interaction of CD47 and signal-regulatory protein alpha (SIRPα) induces “don't eat me signal”, leading suppression of phagocytosis. This signal can affect the clinical course of malignant disease. Although CD47 and SIRPα expression are associated with clinicopathological features in several neoplasms, the investigation for adult T-cell leukemia/lymphoma (ATLL) has not been well-documented. This study aimed to declare the association between CD47 and SIRPα expression and clinicopathological features in ATLL. We performed immunostaining on 73 biopsy samples and found that CD47 is primarily expressed in tumor cells, while SIRPα is expressed in non-neoplastic stromal cells. CD47 positive cases showed significantly higher FoxP3 (P = .0232) and lower CCR4 (P = .0214). SIRPα positive cases presented significantly better overall survival than SIRPα negative cases (P = .0132). SIRPα positive cases showed significantly HLA class I (P = .0062), HLA class II (P = .0133), microenvironment PD-L1 (miPD-L1) (P = .0032), and FoxP3 (P = .0229) positivity. In univariate analysis, SIRPα expression was significantly related to prognosis (Hazard ratio [HR] 0.470; 95% confidence interval [CI] 0.253-0.870; P = .0167], although multivariate analysis did not show SIPRα as an independent prognostic factor. The expression of SIRPα on stromal cells reflects activated immune surveillance mechanism in tumor microenvironment and induce good prognosis in ATLL. More detailed studies for gene expression or genomic abnormalities will disclose clinical and biological significance of the CD47 and SIRPα in ATLL. 相似文献
72.
Masahiro Tajika Keitaro Matsuo Hidemi Ito Dai Chihara Vikram Bhatia Shinya Kondo Tsutomu Tanaka Nobumasa Mizuno Kazuo Hara Susumu Hijioka Hiroshi Imaoka Kazuya Matsumoto Tsuneya Nakamura Yasushi Yatabe Kenji Yamao Yasumasa Niwa 《Journal of gastroenterology》2014,49(5):843-852
Background
It is controversial whether patients with gastric marginal zone lymphomas of mucosa associated lymphoid tissue (MALT) have higher risk of second malignancies. The aim of this study was to define the risk of second malignancies in these patients.Methods
We analyzed prospective follow-up data of 146 consecutive patients with gastric MALT lymphoma treated at Aichi Cancer Center Hospital and compared the incidence of second malignancies with that in the general population. We calculated the standardized incidence ratio (SIR), using age- and sex-specific incidence rates from the Aichi Cancer Registry.Results
The median follow-up period was 74 months. A total of 27 tumors occurred in 22 patients (15.1 %), including 19 solid tumors. Of these, nine tumors were detected concomitantly with, and 18 tumors following, the diagnosis of gastric MALT lymphoma. Four patients had two second malignancies each. For the entire group, the SIR of an additional malignancy was 3.39 (95 % confidence interval [CI] 2.11–4.66). An increased incidence of solid tumors (SIR 2.91 [1.60–4.22]) and hematologic malignancies (SIR 5.54 [1.70–9.38]) were seen. In addition, there was increased risk for development of second malignancies during follow up (SIR 2.26 [1.21–3.30]). Chemotherapy for treatment of MALT was an independent risk factor for second malignancies (age–sex adjusted hazard ratio 3.98 [1.47–10.79].Conclusions
Compared with the general population, patients with gastric MALT lymphoma are at increased risk for second malignancies, including gastric cancer. 相似文献73.
74.
Koichiro Irie Takaaki Tomofuji Daisuke Ekuni Yasumasa Endo Kenta Kasuyama Tetsuji Azuma Naofumi Tamaki Toshiki Yoneda Manabu Morita 《Archives of oral biology》2014
Objective
Previous studies have demonstrated the relationship between ageing and oxidative stress. In this study, we examined the effects of topical application of a dentifrice containing anti-oxidative, anti-inflammatory, and anti-bacterial agents (Tomarina®) to the gingival surface on gingival collagen degradation in rats.Design
Fischer 344 male rats (4 or 8 months old) were divided into two groups: experimental group and control group. Tomarina® (the experimental group) or control dentifrice (the control group) was applied 5 days per week for 2 months.Results
In the control group, gingival collagen density decreased with ageing. In the experimental group, the collagen density did not change with ageing, and was greater than that in the control group at 10 months of age (p < 0.0083). In addition, the control group showed an increase in serum oxidative stress with ageing. The experimental group also showed increased serum oxidative stress, but the value was lower than the control group at 10 months of age (p < 0.0083). Furthermore, low expressions of protein oxidative damage in the periodontal tissue were observed in the experimental group, compared to the control group at 6 months and 10 months.Conclusion
These findings indicate that Tomarina® might suppress the effects of ageing on gingival collagen degradation, by decreasing oxidative stress in the rat model. 相似文献75.
76.
Perioperative Oral Administration of Cystine and Theanine Enhances Recovery After Distal Gastrectomy
Tomohiro Miyachi MD Takashi Tsuchiya MD PhD Atsushi Oyama MD PhD Takahiro Tsuchiya MD Naomi Abe RD Atsuko Sato RD Yasumasa Chiba MSc Shigekazu Kurihara PhD Tetsuro Shibakusa PhD Takashi Mikami BVSc 《JPEN. Journal of parenteral and enteral nutrition》2013,37(3):384-391
Background: It has been reported that cystine and theanine, amino acids related to glutathione synthesis, have immunomodulatory effects, such as suppressing inflammation after strenuous exercise. In this study, we examined the effects of oral administration of cystine and theanine during the perioperative period as a pilot study. Methods: Forty‐three cases of distal gastrectomy for cancer conducted in our department were assigned to the cystine and theanine group (CT group) or to the placebo control group (P group), and a randomized, single‐blind, parallel‐group study was then performed. Cystine (700 mg) and theanine (280 mg) or a placebo was administered to participants for 10 continuous days (4 days before to 5 days after surgery). Changes in pre‐ and postoperative interleukin (IL)–6, C‐reactive protein (CRP), albumin, white blood cell (WBC) count, neutrophil count, total lymphocyte count, resting energy expenditure (REE), and body temperature were compared and examined. Results: Ten patients were excluded, leaving 33 patients in the study. The CT group had significantly lower IL‐6 values (postoperative day [POD] 4), CRP levels (POD 7), neutrophil counts (POD 4), and body temperatures (POD 5) than the P group (P < .05). In addition, REE in the P group peaked on day 1 (1.14 ± 0.16 [pre‐ and postoperative ratio]), whereas the CT group did not show any increase on POD 1 (0.99 ± 0.21, P < .05 vs P group). Conclusions: This study suggests that oral administration of cystine and theanine during the perioperative period may alleviate postgastrectomy inflammation and promote recovery after surgery. 相似文献
77.
Elvan İşeri Esra Güney Mehmet F. Ceylan Ayşegül Yücel Arzu Aral Şahin Bodur Şahnur Şener 《Journal of autism and developmental disorders》2011,41(2):237-241
The etiology of autism is unclear, however autism is considered as a multifactorial disorder that is influenced by neurological,
environmental, immunological and genetic factors. Growth factors, including epidermal growth factor (EGF), play an important
role in the celluler proliferation and the differentiation of the central and peripheral nervous system. In this study we
hypothesized that EGF may play a role in the pathophysiology of autism and examined serum EGF levels in children with autism.
We measured serum levels of EGF in the 27 autistic children and 28 age- matched normal controls. The serum levels of EGF in
the subjects with autism were significantly higher than those of normal control subjects. However, there were no correlations
between serum EGF levels and clinical variables in the subjects with autism. This is the first report demonstrating the increased
serum levels of EGF in children with autism. This study suggests that increased levels of EGF might have an importance in
the pathophysiology of autism. 相似文献
78.
79.
80.
Minoru Isomura Natsuo Oya Seiji Tachiiri Yuko Kaneyasu Yasumasa Nishimura Tetsuo Akimoto Masato Hareyama Tadasi Sugita Norio Mitsuhashi Takashi Yamashita Masahiko Aoki Heitetsu Sai Yutaka Hirokawa Koh-Ichi Sakata Kumiko Karasawa Akihiro Tomida Takashi Tsuruo Yoshio Miki Tetsuo Noda Masahiro Hiraoka 《Clinical cancer research》2008,14(20):6683-6689
PURPOSE: Severe acute radiation dermatitis is observed in approximately 5% to 10% of patients who receive whole-breast radiotherapy. Several factors, including treatment-related and patient-oriented factors, are involved in susceptibility to severe dermatitis. Genetic factors are also thought to be related to a patient's susceptibility to severe dermatitis. To elucidate genetic polymorphisms associated with a susceptibility to radiation-induced dermatitis, a large-scale single-nucleotide polymorphism (SNP) analysis using DNA samples from 156 patients with breast cancer was conducted. EXPERIMENTAL DESIGN: Patients were selected from more than 3,000 female patients with early breast cancer who received radiotherapy after undergoing breast-conserving surgery. The dermatitis group was defined as patients who developed dermatitis at a National Cancer Institute Common Toxicity Criteria grade of > or =2. For the SNP analysis, DNA samples from each patient were subjected to the genotyping of 3,144 SNPs covering 494 genes. RESULTS: SNPs that mapped to two genes, ABCA1 and IL12RB2, were associated with radiation-induced dermatitis. In the ABCA1 gene, one of these SNPs was a nonsynonymous coding SNP causing R219K (P = 0.0065). As for the IL12RB2 gene, the strongest association was observed at SNP-K (rs3790568; P = 0.0013). Using polymorphisms of both genes, the probability of severe dermatitis was estimated for each combination of genotypes. These analyses showed that individuals carrying a combination of genotypes accounting for 14.7% of the Japanese population have the highest probability of developing radiation-induced dermatitis. CONCLUSION: Our results shed light on the mechanisms responsible for radiation-induced dermatitis. These results may also contribute to the individualization of radiotherapy. 相似文献