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Frankia菌侵染木麻黄与其共生结瘤程序 被引量:6
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作者 张昕 沈爱华 +2 位作者 林永敬 王秋芹 林海萍 《浙江农林大学学报》 CAS CSCD 北大核心 2013年第5期669-673,共5页
通过回接结瘤后定期制作半薄、超薄切片,在光学和电子显微镜下观察研究了分离自浙江省短枝木麻黄Casuarina equisetifolia根瘤的2株Frankia菌的侵染过程。结果表明:Frankia菌从根毛细胞侵入后向内部的皮层细胞延伸,受Frankia菌侵入的刺... 通过回接结瘤后定期制作半薄、超薄切片,在光学和电子显微镜下观察研究了分离自浙江省短枝木麻黄Casuarina equisetifolia根瘤的2株Frankia菌的侵染过程。结果表明:Frankia菌从根毛细胞侵入后向内部的皮层细胞延伸,受Frankia菌侵入的刺激,侵染的根毛细胞产生大量电子云密度不等的沉积物。沉积物包裹Frankia菌继续向内侵染,形成"侵染线"穿越细胞壁进入邻近细胞,最终到达根瘤。根瘤产生的时间程序为:接种6 d后Frankia菌已侵染根部细胞;接种12 d后形成了根瘤原基;15 d后根瘤原基的部分薄壁细胞被Frankia菌侵染后,转变为前根瘤;接种24 d后前根瘤进一步生长发育伸长,突出皮层后形成新根瘤并最终发育成成熟瘤。Frankia菌的整个侵染过程为:Frankia菌侵染→形成"侵染线"→形成"界面质"→穿壁→繁殖→泡囊→孢子。根瘤的发育可概括为:根瘤原基→前根瘤→成熟瘤。 展开更多
关键词 森林保护学 木麻黄 FRANKIA菌 侵染 结瘤程序
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Clear cell adenocarcinoma of the colon:A case report and review of literature 被引量:4
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作者 Koichi Soga Hideyuki Konishi +8 位作者 Natsuko Tatsumi Chika Konishi Keimei Nakano Naoki Wakabayashi Shoji Mitsufuji Keisho Kataoka Takeshi Okanoue Ken-Ichi Mukaisho Takanori Hattori 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第7期1137-1140,共4页
A primary clear cell adenocarcinoma of the colon is a rare oncologic entity. We herein report a case of such a tumor of the sigmoid colon in a 71-year-old woman who was successfully treated by an endoscopic polypectom... A primary clear cell adenocarcinoma of the colon is a rare oncologic entity. We herein report a case of such a tumor of the sigmoid colon in a 71-year-old woman who was successfully treated by an endoscopic polypectomy in our hospital. We also reviewed the published reports regarding cases of primary clear cell tumors in the colon. 展开更多
关键词 Adenoma-carcinoma sequence Clear cell carcinoma Colonic adenoma Colon cancer Endoscopic polypectomy
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Isolated Pancreatic Tuberculosis in Non-immunocompromised Patient Treated by Whipple's Procedure:a Case Report 被引量:2
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作者 Shao-long Sun Feng Gao +1 位作者 Dong-xu Cui Bao-sheng Wang 《Chinese Medical Sciences Journal》 CAS CSCD 2014年第1期58-60,共3页
PANCREATIC tuberculosis(TB)is a rare disease and its diagnosis is difficult because of the lack of specific clinical manifestations.Computed tomography(CT)and magnetic resonance imaging(MRI)have some diagnostic values... PANCREATIC tuberculosis(TB)is a rare disease and its diagnosis is difficult because of the lack of specific clinical manifestations.Computed tomography(CT)and magnetic resonance imaging(MRI)have some diagnostic values in this disease,but it is easy to misdiagnose pancreatic TB as a pancreatic tumor.1 In this article,we present a case of non-immunocompromised patient developing an isolated pancreatic TB,report the CT and MRI findings,and the surgical procedure for it. 展开更多
关键词 pancreatic tuberculosis Whipple's procedure computed tomography
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