全文获取类型
收费全文 | 264篇 |
免费 | 11篇 |
国内免费 | 4篇 |
出版年
2021年 | 4篇 |
2020年 | 4篇 |
2016年 | 4篇 |
2015年 | 5篇 |
2014年 | 6篇 |
2013年 | 7篇 |
2012年 | 6篇 |
2011年 | 8篇 |
2010年 | 5篇 |
2009年 | 12篇 |
2008年 | 14篇 |
2007年 | 7篇 |
2006年 | 4篇 |
2005年 | 7篇 |
2004年 | 9篇 |
2003年 | 6篇 |
2001年 | 3篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1998年 | 6篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1991年 | 3篇 |
1990年 | 4篇 |
1955年 | 6篇 |
1954年 | 6篇 |
1952年 | 4篇 |
1950年 | 3篇 |
1949年 | 2篇 |
1945年 | 2篇 |
1943年 | 2篇 |
1942年 | 4篇 |
1928年 | 2篇 |
1927年 | 3篇 |
1925年 | 3篇 |
1919年 | 2篇 |
1917年 | 2篇 |
1916年 | 2篇 |
1913年 | 2篇 |
1909年 | 3篇 |
1908年 | 2篇 |
1907年 | 2篇 |
1905年 | 3篇 |
1904年 | 4篇 |
1903年 | 4篇 |
1902年 | 2篇 |
1901年 | 2篇 |
1900年 | 3篇 |
1899年 | 4篇 |
排序方式: 共有279条查询结果,搜索用时 140 毫秒
71.
72.
73.
74.
75.
The effects of a simple psychosocial manipulation, handling, on immune function in BALB/c.ByJ mice were studied. Handling for two minutes/day prior to immunization was shown to be associated with a decreased primary IgG antibody response to the protein antigen keyhole limpet hemocyanin. Handling was also associated with decreased T cell proliferative responses to Concanavalin A. No reliable changes in spleen cell number or lymphocyte subsets were found. These findings demonstrate that simply picking up an animal results in modulation of the immune response. These data are also of interest for their obvious methodological implications. 相似文献
76.
77.
78.
Ján Lí?KA Július BRTKO Michal DUBOVICKY Dana MACEJOVá Viktória KISSOVá ?tefan POLáK Eduard UJHáZY 《Experimental Animals》2016,65(1):1-9
The mammary gland is a dynamic organ that undergoes structural and functional changes
associated with growth, reproduction, and post-menopausal regression. The postnatal
transformations of the epithelium and stromal cells of the mammary gland may contribute to
its susceptibility to carcinogenesis. The increased cancer incidence in mammary glands of
humans and similarly of rodents in association with their development is believed to be
partly explained by proliferative activity together with lesser degree of differentiation,
but it is not completely understood how the virgin gland retains its higher susceptibility
to carcinogenesis. During its developmental cycle, the mammary gland displays many of the
properties associated with breast cancer. An early first full-term pregnancy may have a
protective effect. Rodent models are useful for investigating potential breast
carcinogens. The purpose of this review is to help recognizing histological appearance of
the epithelium and the stroma of the normal mammary gland in rats, and throughout its
development in relation to tumorigenic potential. 相似文献
79.
80.