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高分化肠型胃腺癌诊断标准的分析

高分化肠型胃腺癌是一种具有低度核异型性的少见胃癌变异型,内镜下此型胃癌常表现为一种边界不清的病变,伴轻微凹陷或隆起,无明显黏膜颜色改变,这给胃镜医师在胃镜下诊断高分化肠型胃癌带来不少困难.病理诊断高分化肠型胃癌亦非常具有挑战性,特别是活检标本,常常被误诊为反应性肠上皮化生或不确定为恶性肿瘤.显微镜下见肿瘤性腺体显示为微小的结构异常,如分支或吻合的腺体,常形成如字母W、H、Y、X等形状.由于此型胃癌非常少,约占早期胃癌的1.9%,其临床病理特征和生物学行为还没有被很好的确立.

陈洁(摘译),刘勇(审校) - 临床与实验病理学杂志

文章来源：万方数据

35例胃肠道间质瘤预后相关参数评估的临床病理分析

血管周上皮样细胞肿瘤(PEComa)是一组具有明确特征的间质肿瘤,多发生在腹膜后、内脏器官和腹腔骨盆部位,常表现为黑色素细胞和平滑肌标记的表达.胃肠道PEComa有不足20例的文献报道,其生物学行为和恶性标准尚未完全确定.本文检测一组胃肠道PEComa的临床病理特征,进一步评估其相关预后参数.

张仁亚 - 临床与实验病理学杂志

文章来源：万方数据

如何培养初一学生生物学学习的兴趣

以教学实践为基础,总结了在培养初一学生学习生物学兴趣方面的一些尝试.

艾小英 - 生物学教学

文章来源：万方数据

Do animal eyespots really mimic eyes?

Martin STEVENS,Graeme D RUXTON - 动物学报(英文版)

文章来源：万方数据

Birds on the move: Special column on bird movement

Studying movements is essential for shedding light on a number of issues related to avian biology: behavioral aspects such as foraging, migratory routes and strategies, navigation and orientation mechanisms; ecological aspects such as metapopulation dynamics, insular biogeography, seed dispersal, disease spread; conservation biology such as the effects of habitat fragmentation, identification of key areas deserving protection, effects of climate change. Despite these relevant issues, the topic of "Movement ecology" on its own has only been highlighted recently (Nathan et al., 2008);although, the investigation of animal movements has always been one of the most fascinating topics for any zoologist and often is also quite a difficult task.

Giuseppe BOGLIANI,Ugo MELLONE,Guest Editors - 动物学报(英文版)

文章来源：万方数据