全文获取类型
| 收费全文 | 332篇 |
| 免费 | 16篇 |
专业分类
| 林业 | 3篇 |
| 农学 | 1篇 |
| 基础科学 | 1篇 |
| 14篇 | |
| 综合类 | 171篇 |
| 农作物 | 2篇 |
| 水产渔业 | 5篇 |
| 畜牧兽医 | 134篇 |
| 园艺 | 13篇 |
| 植物保护 | 4篇 |
出版年
| 2020年 | 5篇 |
| 2019年 | 4篇 |
| 2018年 | 7篇 |
| 2017年 | 4篇 |
| 2016年 | 6篇 |
| 2015年 | 3篇 |
| 2014年 | 5篇 |
| 2013年 | 19篇 |
| 2012年 | 9篇 |
| 2011年 | 6篇 |
| 2010年 | 6篇 |
| 2009年 | 10篇 |
| 2008年 | 11篇 |
| 2007年 | 20篇 |
| 2006年 | 8篇 |
| 2005年 | 7篇 |
| 2004年 | 5篇 |
| 2003年 | 6篇 |
| 2002年 | 9篇 |
| 2001年 | 6篇 |
| 1999年 | 4篇 |
| 1993年 | 4篇 |
| 1991年 | 8篇 |
| 1990年 | 5篇 |
| 1989年 | 2篇 |
| 1988年 | 6篇 |
| 1987年 | 4篇 |
| 1986年 | 2篇 |
| 1985年 | 3篇 |
| 1984年 | 3篇 |
| 1983年 | 6篇 |
| 1982年 | 2篇 |
| 1981年 | 2篇 |
| 1980年 | 2篇 |
| 1979年 | 4篇 |
| 1978年 | 2篇 |
| 1974年 | 2篇 |
| 1970年 | 2篇 |
| 1969年 | 4篇 |
| 1960年 | 3篇 |
| 1959年 | 17篇 |
| 1958年 | 35篇 |
| 1957年 | 32篇 |
| 1952年 | 3篇 |
| 1948年 | 2篇 |
| 1945年 | 2篇 |
| 1944年 | 2篇 |
| 1939年 | 2篇 |
| 1938年 | 2篇 |
| 1937年 | 2篇 |
排序方式： 共有348条查询结果，搜索用时 15 毫秒
31.
Influence of antibody treatment of Campylobacter jejuni on the dose required to colonize chicks 总被引：1，自引：0，他引：1
This study was designed to clarify the role of antibodies in controlling chicken colonization by Campylobacter jejuni. Cecal colonization by C. jejuni was compared after the organism was exposed either to phosphate-buffered saline, normal rabbit serum, rabbit hyperimmune anti-C. jejuni serum, or anti-C. jejuni antibodies extracted from chicken bile. Antibodies from chicken bile were extracted by affinity absorption against outer-membrane proteins from the challenge organism. Sera were heated 1 hour at 56 C to destroy complement activity. Bacterial inoculum levels were enumerated after 1 hour exposure at 4 C to the various treatments. The heated sera and the bile antibodies were not bactericidal, and bacterial agglutination was not evident. Serial dilutions of the antibody-treated C. jejuni were given by gavage into 1-day-old chicks. Six days later, the ceca were removed from the chicks, and samples were cultured on Campylobacter-charcoal differential agar. The colonization dose-50% was increased by twofold to 160-fold when the organism was preincubated with hyperimmune antiserum or the bile antibodies as compared with preincubation with phosphate-buffered saline. We conclude that antibodies inhibit chicken cecal colonization by C. jejuni. 相似文献
32.
33.
34.
35.
36.
37.
38.
39.
40.