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From ancient times to the present-day animal venoms had been used as medicinal and therapeutic agents. Recently it has been reported that the scorpion venom is a potential source of active and therapeutic compounds to design potent drugs against variety of cancerous cells and other diseases. The current study aimed to evaluate the selective toxicity of Iranian Mesobuthus eupeus (IMe) crude venom as a potential source of anticancer compounds on cancerous CLL B-lymphocytes and normal lymphocytes. For this purpose, we isolated cancerous CLL B-lymphocytes and normal lymphocytes from chronic lymphocytic leukemia patients and healthy volunteers. Cancerous CLL B-lymphocytes and normal lymphocytes were treated with different concentration (0, 5, 10, 20, 40 and 80 µg/ml) of IMe crude venom for 12 hours and cytotoxicity, reactive oxygen species (ROS) production, collapse of mitochondrial membrane potential (MMP) and lysosomal membrane integrity were determined. The data demonstrated the significant cytotoxic effect of IMe crude venom on cancerous CLL B-lymphocytes, with a concentration value (IC50) that inhibits 50% of the cell viability of 60 µg/ ml after 12 h of incubation. MTT assay proved that the IMe crude venom is selectively toxic to cancerous CLL B-lymphocytes, and IMe crude venom induced selective cell death via activation of ROS formation and mitochondrial/lysosomal dysfunction. These finding showed that IMe crude venom has a selective mitochondrial/lysosomal-mediated cell death effect on cancerous CLL B-lymphocytes. Therefore, the IMe crude venom and its fractions may be promising in the future anticancer drug development for treatment of CLL and variety of cancers.  相似文献   
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《Drug discovery today》2022,27(4):1196-1203
Immuno-positron emission tomography (immunoPET) imaging is a paradigm-shifting imaging technique for whole-body and all-lesion tumor detection, based on the combined specificity of tumor-targeting vectors [e.g., monoclonal antibodies (mAbs), nanobodies, and bispecific antibodies] and the sensitivity of PET imaging. By noninvasively, comprehensively, and serially revealing heterogeneous tumor antigen expression, immunoPET imaging is gradually improving the theranostic prospects for hematological malignancies. In this review, we summarize the available literature regarding immunoPET in imaging hematological malignancies. We also highlight the pros and cons of current conjugation strategies, and modular chemistry that can be leveraged to develop novel immunoPET probes for hematological malignancies. Lastly, we discuss the use of immunoPET imaging in guiding antibody drug development.  相似文献   
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BackgroundIn the phase III MDS-005 study of patients with lower-risk, non-del(5q) myelodysplastic syndromes, lenalidomide was associated with a higher rate of ≥ 8 weeks red blood cell transfusion independence (RBC-TI) compared with placebo, but also with a higher risk of hematologic adverse events (AEs).Patients and MethodsThis analysis evaluated the ratio of clinical benefit-risk in patients treated with lenalidomide or placebo, and assessed the effect of lenalidomide dose reductions on response. Clinical benefit was a composite endpoint defined as RBC-TI, transfusion reduction ≥ 4 units packed red blood cells, hemoglobin increase ≥ 1.5 g/dL, or cytogenetic response.ResultsThe rate of clinical benefit was higher with lenalidomide than with placebo (31.9% vs. 3.8%). The ratio of response (RBC-TI and clinical benefit) to risk (hematologic AEs) favored lenalidomide over placebo. Patients who underwent ≥ 1 lenalidomide dose reduction had a longer duration of treatment, received a higher cumulative dose, and were more likely to experience clinical benefit versus patients without dose reductions.ConclusionDespite the occurrence of hematologic AEs, the overall benefit-risk profile supported lenalidomide treatment. Appropriate management of hematologic AEs by dose reductions may help patients with myelodysplastic syndromes to remain on treatment and achieve clinical benefit.  相似文献   
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目的探讨继发性肺淋巴瘤(SPL)的CT表现。方法回顾性分析经穿刺活检、手术病理证实诊断为SPL的43例患者的临床和CT资料。结果 43例病理类型中31例非霍奇金淋巴瘤(NHL),12例霍奇金淋巴瘤(HL);胸部CT示肺内结节影8例,其中多发实性结节影4例,单发实性结节影2例,多发浅淡磨玻璃样结节1例;大片实变19例,单发实变9例,其余10例均为多发片状实变影;团块影16例,单发团块4例,多发团块影12例,其中2例伴不规则空洞性团块。43例中7例接受增强检查,大部病灶呈不均匀轻中度强化,3例病灶内见坏死无强化区,1例伴不规则空洞,1例病灶内可见穿行血管。伴随其它CT表现包括10例伴有单侧胸腔大量积液,3例伴有单侧少量积液,1例伴有肋骨破坏及胸壁肿块影,7例纵隔、腋下淋巴结肿大,4例病例发现肺以外器官的侵犯。结论 SPL可表现为结节影、实变影及团块影,可单发、多发,掌握其CT影像特点,能够为临床诊疗提供帮助。  相似文献   
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Background: Making progressin treatment of all branches of cancers has increasedthe percent of patients that never experience the event of interest. These cases are called immune or cure and models for handling the data included cure fraction rate, are referred to as cure model or long-term survival models. Methods:The data for this historical cohort study, were collected from leukemia patients diagnosed between 2007 to 2014 and followed up until 2016 in Taleghani hospital and received BMT (Bone Marrow Transplant). Some data had to be excluded because of incomplete information. Using recorded files mostly and phone calls rarely, were made to confirm whether the patients were still alive or not. Death due to leukemia was regarded as interested event. Analysis were performed by R version 3.4.1and Stata version 14. Results: Number of recurrents after receiving BMT, pre-transplant Hb and age at diagnosis were found as significant prognostics of survival time. HD patients had the highest 5-years overall survival in category of diagnosis type with 81.3%. Cure fraction was estimated to be 64.1%. Conclusion: According to high percentage of censoring, using long-term model had better fit.  相似文献   
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Leukemia in pregnancy is a rare condition with the prevalence of 1 in 75,000–100,000 pregnancies. In this case report, we present a successful multidisciplinary management strategy for treatment and for preserving the reproductive potential in a rare case of acute lymphocytic leukemia (ALL) during pregnancy. Several complex challenges existed and necessitated a multidisciplinary approach with strong coordination and collaboration between oncologists, gynecologists, reproductive cryobiologists, obstetricians, and neonatologists in order to improve the maternal and fetal outcome. Pregnancy in the second trimester is neither a contraindication for ALL treatment nor for emergency fertility preservation via ovarian tissue extraction and further cryopreservation.  相似文献   
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目的:提高对儿童急性髓系白血病(AML)合并淋巴母细胞淋巴瘤(LBL)的认识。方法:回顾性分析郑州大学第一附属医院2016年4月收治的1例AML合并LBL患儿的临床特点、诊断方法、治疗方案及预后,并复习相关文献。结果:患儿,男性,11岁,以发热、血象异常、颈部淋巴结肿大为临床表现,行颈部淋巴结活组织检查,诊断为T淋巴母细胞淋巴瘤(T-LBL)。经骨髓细胞形态学、免疫学、遗传学及分子生物学(MICM)分型检查,诊断为AML。患儿同时符合两种疾病诊断标准,确诊为AML合并T-LBL。按AML方案进行化疗,达到完全缓解并无病生存。结论:AML合并LBL在儿童中极为罕见,诊断主要依靠骨髓MICM分型检查及淋巴结病理学检查,目前无标准治疗方案,预后极差,按AML方案化疗后桥接造血干细胞移植可作为此类患者的最佳治疗选择。  相似文献   
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