全文获取类型
收费全文 | 51篇 |
免费 | 2篇 |
专业分类
妇产科学 | 1篇 |
基础医学 | 33篇 |
口腔科学 | 1篇 |
临床医学 | 1篇 |
内科学 | 3篇 |
神经病学 | 1篇 |
特种医学 | 3篇 |
预防医学 | 8篇 |
药学 | 1篇 |
肿瘤学 | 1篇 |
出版年
2022年 | 1篇 |
2021年 | 5篇 |
2020年 | 3篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2015年 | 1篇 |
2014年 | 4篇 |
2013年 | 5篇 |
2012年 | 2篇 |
2011年 | 3篇 |
2010年 | 2篇 |
2009年 | 1篇 |
2007年 | 1篇 |
2006年 | 3篇 |
2005年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
1998年 | 1篇 |
1997年 | 3篇 |
1985年 | 1篇 |
1983年 | 3篇 |
1979年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1970年 | 1篇 |
1968年 | 2篇 |
排序方式: 共有53条查询结果,搜索用时 15 毫秒
1.
2.
Talayev VY Zaichenko IY Babaykina ON Lomunova MA Talayeva EB Nikonova MF 《Clinical and experimental immunology》2005,141(3):440-448
The effects of dexamethasone phosphate and interleukin‐7 upon the proliferation of T‐cells and the production of interferon‐γ in the newborn's cord blood mononuclear cell cultures were studied. The capability of dexamethasone to enhance T‐cell proliferation induced by anti‐CD3 with interleukin‐7 in some newborn cord blood mononuclear cell cultures was identified. Dexamethasone suppressed production of interferon‐γ in 68‐h cell cultures stimulated with anti‐CD3 both in the presence of interleukin‐7 and without it. However, a 68‐h cultivation of newborn blood cells with dexamethasone, anti‐CD3 and interleukin‐7 resulted in the accumulation of T‐lymphocytes capable of producing interferon‐γ after restimulation. As a result of it the amount of interferon‐γ producing CD7+ T‐cells and the concentration of interferon‐γ in cultural supernatants were maximal in the cell cultures incubated with anti‐CD3, interleukin‐7 and dexamethasone during the first 68 h and subsequently restimulated with phorbol 12‐myristate 13‐acetate and ionomycin. The stimulation of neonatal or adult blood cells by dexamethasone, anti‐CD3 and interleukine‐7 also causes a decrease in the number of naïve T‐cells and central memory cells and an increase in the number of effector memory CD7+CD45RA+CD62L– cells in cultures. It is possible that these effects are caused by the influence of dexamethasone on IL‐7 receptor expression: it is known that IL‐7 receptor alpha‐chain gene is a glucocorticoid‐inducible gene. 相似文献
3.
Al-Bahry SN Al-Mashani BM Al-Ansari AS Elshafie AE Mahmoud IY 《Asian Pacific journal of tropical medicine》2013,6(9):718-722
ObjectiveTo screen for Escherichia coli (E. coli) resistant to tetracycline, followed by identification of tet efflux genes by polymerase chain reaction (PCR). In addition, detection of tetracycline residues in chicken livers and kidneys were conducted using high performance liquid chromatography-tandem quadrupole mass spectrometry (HPLC-MS-MS).MethodsStrains of E. coli were isolated from samples of chicken colon and screened for tetracycline resistance. Tetracycline genes conferring resistance (Tcr) were detected by polymerase chain reaction (PCR). Most of the isolates were resistant to tetracycline (97.9%).ResultsPCR analysis indicated that Tcr E. coli R-plasmids contained tet(A), tet(B) and a combination of both efflux genes. None of the isolates contained other efflux tet genes tet (C, D, E and Y). High performance liquid chromatography-tandem quadrupole mass spectrometry (HPLC-MS-MS), a sensitive technique, was used to detect residues of chlortetracycline (CTC), oxytetracycline (OTC), doxycycline (DC) in chicken livers and kidneys. The samples containing tetracycline residues were at 0.13-0.65 pg/μL levels.ConclusionsTetracycline and other antibiotics are commonly used in the poultry and meat production industry for prevention of microbial infections. Multiple antibiotic resistant bacteria in Oman have increased to alarming levels, threatening public health, domestic and may have adverse effect on environment. 相似文献
4.
5.
Broshevitskaya N. D. Pavlova I. V. Zaichenko M. I. Gruzdeva V. A. Grigoryan G. A. 《Neuroscience and behavioral physiology》2021,51(3):390-401
Neuroscience and Behavioral Physiology - Early proinflammatory stress created by administration of lipopolysaccharide (LPS) (50 μg/kg s.c.) on days 3 and 5 of postnatal life led to decreases... 相似文献
6.
7.
M. I. Zaichenko G. Kh. Merzhanova A. V. Demina 《Neuroscience and behavioral physiology》2011,41(6):606-612
Rats divided on the basis of a test in which they were presented with the “right” to choose a more valuable but delayed or
a less valuable but immediate reinforcement into “impulsive” and “self-controlled” groups were studied using the “emotional
resonance” method. These experiments showed that none of the rats of the “self-controlled” group, selecting the more valuable
but delayed reinforcement, avoided defensive arousal signals from another individual of the same species, preferring to spend
a large proportion of time in the dark “house.” Most (80%) of the animals of the “impulsive” group spent more than half the
experimental period in the light sector, thus saving the partner from electrical stimulation. It is suggested that there are
several common mechanisms underlying these two types of behavior. 相似文献
8.
9.
10.
目的:通过与组织学的对照研究,探讨MSCT和一种新型的μCT系统对评价恶性脑肿瘤体积的诊断准确性。方法:14只小鼠通过立体定向术植入GFP标记的98F一胶质瘤细胞。植入术后第10天所有小鼠行双倍剂量对比增强μCT和MSCT检查。将2种检查方法测量的肿瘤体积与组织病理学结果进行对照分析。 相似文献