全文获取类型
收费全文 | 363篇 |
免费 | 52篇 |
国内免费 | 2篇 |
出版年
2021年 | 5篇 |
2020年 | 4篇 |
2019年 | 2篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2015年 | 8篇 |
2014年 | 17篇 |
2013年 | 26篇 |
2012年 | 11篇 |
2011年 | 16篇 |
2010年 | 17篇 |
2009年 | 8篇 |
2008年 | 18篇 |
2007年 | 17篇 |
2006年 | 23篇 |
2005年 | 11篇 |
2004年 | 13篇 |
2003年 | 8篇 |
2002年 | 9篇 |
2001年 | 10篇 |
2000年 | 16篇 |
1999年 | 13篇 |
1998年 | 6篇 |
1996年 | 8篇 |
1995年 | 9篇 |
1993年 | 3篇 |
1992年 | 13篇 |
1991年 | 7篇 |
1990年 | 8篇 |
1989年 | 5篇 |
1988年 | 8篇 |
1987年 | 12篇 |
1986年 | 7篇 |
1984年 | 8篇 |
1983年 | 8篇 |
1982年 | 6篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 6篇 |
1977年 | 6篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1974年 | 6篇 |
1973年 | 5篇 |
1972年 | 3篇 |
1968年 | 3篇 |
1967年 | 1篇 |
1966年 | 2篇 |
1965年 | 2篇 |
1958年 | 1篇 |
排序方式: 共有417条查询结果,搜索用时 88 毫秒
411.
Fibronectin (FN) in hypertrophic scars and keloids 总被引:2,自引:0,他引:2
Summary Fibronectin (FN) distribution was compared among samples of normal human dermis, hypertrophic scar, keloid, and granulation tissues from deep injuries. Localization was established by use of fibronectin antibodies and the indirect immunofluorescence method. Fresh-frozen tissue was sectioned on a cryostat and examined by epifluorescence. Hypertrophic scar and keloid demonstrated heavy deposition of FN, which conformed to the nodular characteristics of the lesions. Intense localization occurred in granulation tissue over fibroblasts which were stellate and vesiculated, and over small blood vessels. FN-staining was weak in areas over fibroblasts which were more rounded and nonvesiculated. Staining for FN was also minimal over the collagen in normal dermis and the deeper, larger collagen fascicles in the lesions. Fibroblasts cultured from normal dermis, hypertrophic scar, and keloid for 5–6 weeks were intensely stained for FN. Extracellular matrix was heavily positive in cultures from the lesions compared with those from normal dermis.Supported in part by NIH Research Grant 1 R01GM 25159 相似文献
412.
Olfactory sexual inhibition and the westermarck effect 总被引:1,自引:0,他引:1
The Westermarck effect (sexual inhibition among individuals raised together) is argued to be mediated olfactorily. Various
animals, including humans, distinguish among individuals by scent (significantly determined by MHC genotype), and some avoid
cosocialized associates on this basis. Possible models of olfactory mechanisms in humans are evaluated. Evidence suggests
aversions develop during an early sensitizing period, attach to persons as much as to their scents, and are more powerful
among females than among males. Adult to child aversions may develop similarly, but more likely result from stimulus generalization.
This hypothesis accords with current evidence and yields testable predictions (e.g., anosmia will prevent inhibition) that,
should they be supported, will conclusively ground the Westermarck effect in a biological mechanism.
A version of this paper was originally presented at the 92nd annual meeting of the American Sociological Association in Toronto,
Canada.
Mark A. Schneider is a sociologist of science and author of “Sacredness, Status and Bodily Violation” (Body and Society, 1996) as well as Culture and Enchantment (Chicago, 1993). Lewellyn Hendrix has written extensively on families in cross-cultural perspective and is the author of
Illegitimacy and Social Structures (Bergin and Garvey, 1996). They recently coauthored “Assumptions on Sex and Society in the Biosocial Theory of Incest” (Cross-Cultural Research, 1999). 相似文献
413.
A R Buckley D W Montgomery M J Hendrix C F Zukoski C W Putnam 《Archives of biochemistry and biophysics》1992,296(1):198-206
Prolactin is a trophic hormone which may act directly at the hepatocyte nucleus. In this study, specific prolactin binding sites were sought in purified rat liver nuclei. Saturable and specific, high affinity 125I-prolactin binding sites were demonstrated to be on or within the nucleus. Prolactin binding was competitively inhibited by rat and ovine prolactins but not by rat growth hormone. Using immunogold electron microscopy, we detected prolactin receptors throughout the nucleus, in association with heterochromatin. Furthermore, endogenous immunoreactive prolactin was demonstrated to be within hepatic nuclei. We conclude that rat liver nuclei possess prolactin binding sites which likely participate in hormone-directed growth processes. 相似文献
414.
415.
416.
Sharon LR Simon Lise Lamoureux Margot Plews Michael Stobart Jillian LeMaistre Ute Ziegler Catherine Graham Stefanie Czub Martin Groschup J David Knox 《Proteome science》2008,6(1):23
Background
The bovine spongiform encephalopathy (BSE) epidemic and the emergence of a new human variant of Creutzfeldt-Jakob Disease (vCJD) have led to profound changes in the production and trade of agricultural goods. The rapid tests currently approved for BSE monitoring in slaughtered cattle are all based on the detection of the disease related isoform of the prion protein, PrPd, in brain tissue and consequently are only suitable for post-mortem diagnosis. Objectives: In instances such as assessing the health of breeding stock for export purposes where post-mortem testing is not an option, there is a demand for an ante-mortem test based on a matrix or body fluid that would permit easy access and repeated sampling. Urine and urine based analyses would meet these requirements. 相似文献417.