全文获取类型
收费全文 | 3237篇 |
免费 | 162篇 |
国内免费 | 28篇 |
专业分类
耳鼻咽喉 | 18篇 |
儿科学 | 114篇 |
妇产科学 | 81篇 |
基础医学 | 524篇 |
口腔科学 | 58篇 |
临床医学 | 239篇 |
内科学 | 858篇 |
皮肤病学 | 43篇 |
神经病学 | 407篇 |
特种医学 | 93篇 |
外科学 | 246篇 |
综合类 | 9篇 |
预防医学 | 168篇 |
眼科学 | 33篇 |
药学 | 208篇 |
中国医学 | 10篇 |
肿瘤学 | 318篇 |
出版年
2024年 | 11篇 |
2023年 | 30篇 |
2022年 | 61篇 |
2021年 | 102篇 |
2020年 | 58篇 |
2019年 | 59篇 |
2018年 | 107篇 |
2017年 | 77篇 |
2016年 | 70篇 |
2015年 | 95篇 |
2014年 | 115篇 |
2013年 | 171篇 |
2012年 | 244篇 |
2011年 | 231篇 |
2010年 | 129篇 |
2009年 | 147篇 |
2008年 | 245篇 |
2007年 | 229篇 |
2006年 | 216篇 |
2005年 | 193篇 |
2004年 | 209篇 |
2003年 | 158篇 |
2002年 | 141篇 |
2001年 | 28篇 |
2000年 | 20篇 |
1999年 | 31篇 |
1998年 | 35篇 |
1997年 | 32篇 |
1996年 | 18篇 |
1995年 | 11篇 |
1994年 | 20篇 |
1993年 | 17篇 |
1992年 | 9篇 |
1991年 | 12篇 |
1990年 | 10篇 |
1989年 | 9篇 |
1988年 | 7篇 |
1987年 | 6篇 |
1986年 | 8篇 |
1985年 | 4篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1978年 | 3篇 |
1977年 | 4篇 |
1975年 | 3篇 |
1969年 | 5篇 |
1968年 | 7篇 |
1967年 | 4篇 |
1966年 | 5篇 |
1965年 | 4篇 |
排序方式: 共有3427条查询结果,搜索用时 15 毫秒
51.
Gioia A. L. Negri Raffaella I. Rumiati Antonietta Zadini Maja Ukmar Bradford Z. Mahon Alfonso Caramazza 《Cognitive neuropsychology》2013,30(8):795-816
An important issue in contemporary cognitive neuroscience concerns the role of motor production processes in perceptual and conceptual analysis. To address this issue, we studied the performance of a large group of unilateral stroke patients across a range of tasks using the same set of common manipulable objects. All patients (n = 37) were tested for their ability to demonstrate the use of the objects, recognize the objects, recognize the corresponding object-associated pantomimes, and imitate those same pantomimes. At the group level we observed reliable correlations between object use and pantomime recognition, object use and object recognition, and pantomime imitation and pantomime recognition. At the single-case level, we document that the ability to recognize actions and objects dissociates from the ability to use those same objects. These data are problematic for the hypothesis that motor processes are constitutively involved in the recognition of actions and objects and frame new questions about the inferences that are merited by recent findings in cognitive neuroscience. 相似文献
52.
Niki Antypa Raffaella Calati Daniel Souery Silvia Pellegrini Othman Sentissi Daniela Amital Ulrike Moser Stuart Montgomery Siegfried Kasper Joseph Zohar Diana De Ronchi Julien Mendlewicz Alessandro Serretti 《Journal of affective disorders》2013
Background
Social adjustment is impaired in depressed patients. The difficulty to adjust to social circumstances has been hypothesized to be one of the causes of depression, as well as a consequence of the disorder. Genetic variation in the serotonin transporter gene has been previously associated with social adjustment levels in patients with mood disorders.Methods
We investigated whether variations on the HTR1A (rs6295) and HTR2A (rs7997012) genes were associated with levels of social adjustment using the Social Adjustment Scale in two samples of depressed patients (total n=156).Results
Patients carrying the GG genotype of the HTR2A-rs7997012 showed better social adjustment in areas of work and family unit bonding.Limitations
These findings did not survive correction for multiple testing and should be interpreted with caution.Conclusion
Our finding is in line with previous observations that have associated the G allele of the HTR2A-rs7997012 with higher rate of antidepressant response. The HTR2A-rs7997012 is worthy of further investigation in studies examining factors that are related to depression course and outcome. 相似文献53.
Saraceno Lorenzo Susani Emanuela Laura Marazzi Maria Raffaella Moioli Maria Cristina Agostoni Elio Clemente Protti Alessandra 《Neurological sciences》2021,42(12):4881-4884
Neurological Sciences - Literature data reporting SARS-CoV-2 infection in multiple sclerosis (MS) patients recently treated with immunodepleting agents as cladribine and alemtuzumab are very... 相似文献
54.
Donaldson Kandace Huntington Alyssa De Vita Raffaella 《Annals of biomedical engineering》2021,49(8):1788-1804
Annals of Biomedical Engineering - The uterosacral ligaments (USLs) are important anatomical structures that support the uterus and apical vagina within the pelvis. As these structures are... 相似文献
55.
56.
57.
58.
59.
Raffaella Santi Alessandro Franchi Valeria Saladino Massimo Trovati Giovanna Cenacchi Massimo Squadrelli-Saraceno Gabriella Nesi 《Head and neck pathology》2015,9(2):300-304
Paragangliomas (PGs) of the head and neck region are typically benign, slow-growing neuroendocrine tumours. At times, they may exhibit unusual histological features, such as prominent stromal sclerosis (sclerosing PG), which may raise concerns of malignancy. We describe a case of sclerosing PG of the carotid body, emphasizing the value of immunohistochemical stains for differential diagnosis. A 43-year-old woman presented with a painless lump on the neck. A magnetic resonance imaging scan demonstrated a hypervascular lesion of the carotid body, which was surgically excised. Grossly, the lesion measured 1.8 cm at maximum diameter. On microscopic examination, irregular nests and tiny bundles of neoplastic cells were found between thick bands of fibrous tissue. Focal nuclear cytomegaly and marked pleomorphism were noted. Neoplastic cells proved to be immunoreactive for chromogranin, synaptophysin and neuron specific enolase, but negative for cytokeratins, smooth muscle actin and CD34. Ultrastructurally, numerous mitochondria, rough endoplasmic reticulum structures and endocrine granules were seen in the cytoplasm of the tumour cells. On consideration of the above-mentioned clinico-pathological and ultrastructural findings a diagnosis of sclerosing PG was established. Sclerosing PG is a rare entity which may mimic a malignant neoplasm. The recognition of this unusual morphological variant of PG, together with appropriate immunostains, leads to the correct diagnosis. 相似文献
60.
Maternal uniparental isodisomy (iUPD) of chromosome 4 in a subject with mild intellectual disability and speech delay 下载免费PDF全文