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1.
A study was made concerning the role of adrenergic and cholinergic neural regulation in the functional activity of enzymes of microsomal oxidation in the liver. Experiments were performed on adult and old rats using surgical denervation of liver (vagotomy and sympathotomy). The results obtained showed changes that occurred in the monooxygenase activity (aminopyrine demethylase and aniline hydroxylase), as well as in the isoform composition and inductive synthesis of cytochrome P-450. The neural control over liver detoxication function was found to weaken in old age. 相似文献
2.
Characterization of FcepsilonRI-bearing CD123 blood dendritic cell antigen-2 plasmacytoid dendritic cells in atopic dermatitis 总被引:3,自引:0,他引:3
Novak N Allam JP Hagemann T Jenneck C Laffer S Valenta R Kochan J Bieber T 《The Journal of allergy and clinical immunology》2004,114(2):364-370
BACKGROUND: The high-affinity receptor for IgE (FcepsilonRI) on myeloid dendritic cells has been shown to play a major role in atopic dermatitis (AD). Plasmacytoid dendritic cells (pDCs), which are instrumental in the defense of viral infections, are present in reduced amounts in the skin of patients with AD, which is characterized by a high susceptibility to viral infections. OBJECTIVE: We explored phenotypical and functional characteristics of pDC in the peripheral blood of patients with AD and healthy individuals. METHODS: Blood dendritic cell antigen-2+CD123+ pDCs were enriched from the peripheral blood of patients with AD and studied in functional assays. RESULTS: Skin-homing molecules such as cutaneous lymphocyte antigen and L-selectin CD62L were expressed in lower levels on pDCs of patients with AD. pDCs expressed high amounts of IgE-occupied FcepsilonRI. Further, FcepsilonRI aggregation on pDCs impaired the surface expression of MHC I and II, induced the production of IL-10, and enhanced the apoptosis of pDCs. Importantly, FcepsilonRI preactivated pDC produced less IFN-alpha and IFN-beta after stimulation with CpG motifs and enhanced the outcome of immune responses of the TH2 type. CONCLUSION: From these data, we conclude that FcepsilonRI-bearing pDCs from patients with AD (1) are different from pDCs of healthy individuals, (2) might be important in the pathophysiology of AD, and (3) contribute to the enhanced susceptibility of patients with AD to viral infections. 相似文献
3.
Jovanović I Stefanović N Antić S Ugrenović S Djindjić B Vidović N 《Italian journal of anatomy and embryology = Archivio italiano di anatomia ed embriologia》2004,109(1):19-33
Psammoma bodies are one of many choroid plexus aging changes which origin is still enigma for the scientists. During our investigation psammoma bodies were studied on 30 postmortem brains by light microscopy. They stained red with HE, and were PAS and AB PAS positive. The largest number of lamellas were stained blue with Mallory's connective tissue stain, except peripheral and next to the center lamella which stained red. During the aging, psammoma bodies became larger and more irregular, which was followed with group area and perimeter, single psammoma body average area and average perimeter, average diameter and contour index increase. Psammoma bodies mearged in the second and the third age group and mearging process led to larger and more irregular structures formation. The results of this investigation suggest that psammoma bodies are more frequent in choroid plexus of healthy older people and during the aging they obtain larger dimensions, more irregular contours, which is the result of their mutual mearging. 相似文献
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Frolkis VV Kordjum VA Bogatskaya LN Novikova SN Shulzhenko VN Kostetsky IE Mozzhukhina TG Potapenko RI Sabko VE Paramonova GI Shkapenko AL 《Archives of gerontology and geriatrics》1991,13(3):225-235
Transfer of human ApoA1 gene within the molecular construction which provides its expression, to the liver of the adult and aged rats resulted in the appearance of human protein in their blood, and was accompanied by changes in the content of high-density lipoproteins and of their subclasses HDL(3) and HDL(2), as well as by the shifts in their protein and lipid composition. Synthesis of human ApoA1 was more marked in the organism of adult rats, and gene-regulatory shifts in aged rats. 相似文献
6.
Rade Cukuranovic Ivan Jovanovic Sladjana Miljkovic Natalija Stefanovic Slobodan Vlajkovic Miomir Prokopovic 《Renal failure》2013,35(7):805-810
Aim. To analyze hemodialysis (HD) treatment of patients with Balkan endemic nephropathy (BEN) from five endemic villages in the South Morava Region of Serbia. Analyses of patterns of incidence may generate hypotheses about the underlying causes of BEN, and prevalence data provide information on the current and likely future burden on health services for managing BEN. Methods. A total of 143 end-stage kidney disease patients (ESKD) with BEN were admitted to the renal replacement program from 1974 to 2004: 121 to HD, 15 peritoneal dialysis, and 7 kidney transplantation. As a control group, 117 patients with other kidney disease (chronic pyelonephritis, glomerulonephritis, and ischemic nephropathy) admitted to HD at the time of BEN patients and matched by age and gender were studied. Results. Most of the BEN patients (93.4%) treated by HD were born from 1917 to 1941. The majority of patients (79.3%) started HD from 1977 to 1991 (period of 15 years). The mean age of BEN patients starting HD treatment was 49.1 years in the period from 1974 to 1978, and increased steadily in the following years, being 72.5 years in the last period of study (2004–2006) The mean survival time of BEN males was 4.70 (95% CI 3.66–5.75) and for females was 5.02 (95% CI 1.47–4.53). Difference between males and females was not statistically significant (log rank 0.14, p?=?0.7, P > 0.5). Mean survival times of 4.84 (95% CI 3.97–5.70) in BEN patients and 3.1 (95% CI 2.78–3.84) in other kidney disease patients were found. Difference between BEN patients and controls was statistically significant (log rank 8.38, p?=?0.0038, P < 0.01). Conclusion. The population of endemic villages around the South Morava River admitted to HD treatment after 1974 was exposed to environmental toxicant(s) from 1917 to 1941. The most intense effect of environmental exposure was in that period, with ESKD in patients in their forties. The exposure to environmental toxicants has diminished, so ESKD of BEN has become less frequent and manifested in the older age, mean 72.5 in the period from 2004 to 2006. Different type of exposure was registered in some other endemic regions in Serbia and abroad. 相似文献
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Progression of kidney damage was studied in 18 patients with Balkan endemic nephropathy (BEN), with a mean 15-year follow-up after renal biopsy. According to kidney function, estimated by 99mTc-DTPA clearance, patients were divided into three groups: with apparently normal kidney function (clearance 103.5 ± 21.3 mL/min/1.73 m2), with incipient renal failure (clearance 65.5 ± 11.3), and with advanced renal failure (clearance 28.0 ± 6.2). The mean yearly decrease of glomerular filtration rate was 2.74 mL/min. In two patients, an increase of kidney function was recorded. Six patients become dialysis dependent, two from the group with incipient renal failure, but all four from the group with advanced renal failure. Three patients died after 8 to 12 years of follow-up, one from causes unrelated to kidney disease and two from end-stage renal failure. This study has shown that BEN is characterized by a slow course and prolonged evolution, modified by medical supervision and treatment. 相似文献
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Vladimir Prokopovic Milica Popovic Uros Andjelkovic Aleksandra Marsavelski Brankica Raskovic Marija Gavrovic-Jankulovic Natalija Polovic 《Archives of oral biology》2014