发生生物学

Based on soil desertification between agriculture and husbandry interlace zone in north of Shannxi Province, on the basis of theories of landscape ecology、land resource and principle of soil genesic science, through field surveying data and indoor analyzing, the properties of soil physical, chemical and biological characteristics are systemic analyzed about desertification soil of different vegetation cover rate and type, achieving primary achievements and important evolves are as follows:Ⅰ.

本研究基于当前全球荒漠化危害现状及国内外荒漠化防治中恢复生态学的发展需要，以陕北农牧交错带土地荒漠化问题为研究对象，应用景观生态学理论、土地资源学和土壤发生学的基本原理，在野外考察、资料收集和室内测定分析的基础上，对不同植被盖度和植被类型荒漠化土地的土壤理化性质和生物学性质进行系统分析，取得的主要成果如下： 1。

The author reviewed the research progress on the study of several Gibberella species of agricultural importance, which represent phylogenetic, biological and chemical diversity of this genus.

选取几种在农业生产上重要的赤霉属真菌来阐述该属在系统发生，生物学和化学上的多样性，并且比较了它们在分类学、遗传学、植物病理学和真菌毒理学方面的差异。

Cases of tumor was performed by immunohistrochemical staining EMA and Vim were positive. 12 cases were hyperplasic lesions of mesothelial cell. Induced rats' MPM had a higher similarity with human' s MPM, especially in pathogenicity, positions, histological type and biological behavior of invasion and metastesis.

结果 实验组发生胸膜间皮瘤66例，诱发率71.74%，大体形态肉眼结节型间皮瘤较多见（72.73%）组织形态可见上皮型、梭形细胞型及混合型双向多潜能分化，13例免疫组化EMA及Vim双向阳性，并可见12例胸膜间皮细胞增生性病变，诱发瘤在病因，发病部位，组织形态学以及浸润转移的生物学行为方面与人体间皮瘤极为相似。

Two sibling species Helicoverpa armigeraH(u|¨bner and H.assulta are serious crop pests in China.They have the similar morphological,biological and ecological characterstics,as well as they can even hybridize with each other.Their host plant ranges, however,are quite different.The former is a typical polyhpagous species,and its host plant range including at least more than 60 crop species such as cotton,corn,wheat,soybean, tobacco,and tomato,and 67 wild plant species from about 30 plant families including Malvaceae,Solanaceae,Gramineae,Leguminosae,etc.

可同域发生的棉铃虫Helicoverpa armigeraH(u丨¨bner和烟夜蛾H.assulta是铃夜蛾属两近缘种昆虫，二者具有相似的生物学和生态学习性，甚至杂交可育，但它们的寄主范围却截然不同，棉铃虫是多食性昆虫，烟夜蛾则是典型的寡食性昆虫。

Generally we think muscular histogenesis has many steps of biology, including foetal mesoderm merotomy; myoblast shapes in arthromera; myoblast can form muscular tissue to move to limbs; the proliferation of sarcoblast can increase cells\'quatity.

一般认为，肌组织发生是一多步骤的生物学过程，包括胚胎中胚层的分节；成肌细胞在体节形成；成肌细胞向四肢迁移形成肌组织；成肌细胞增殖以增加细胞数量。

Invasion is one of the most important characteristics of malignant tumor cells and the premise for cancer cell to metastasize.

迄今为止，有关该肿瘤发生的分子生物学机制仍不甚清楚，临床上缺少有效的预防和治疗手段。侵袭是癌细胞最重要的特征之一，也是导致癌细胞转移的前提条件。

P.05 Conclusion: Expression level of GAP-43 in all the layers of lateral geniculatenucleus and the layers II -VI of visual cortex area 17 of monocularly deprived rats during the critical period are reduced.

单眼剥夺大鼠视觉系统外侧膝状体和视皮质17区GAP-43表达均降低，提示GAP-43在视觉系统的作用可能是弱视发生的分子生物学基础之一。

In endometrial carcinoma, the expression of survivin was significantly associated with histological grade,the presence of invasion to myometrium and pathological stage (P.01,P.001 and P.01, respectively).

survivin蛋白与子宫内膜癌的发生有关，并且与子宫内膜癌的不良生物学行为有关，可为临床治疗提供有价值的信息，对估计预后有指导意义。

In this review, we primarily focus on the behavioral-neuroendocrine mechanism of development of homosexuality from genetic, neuroendocrine neuroanatomical and behavioral studies.

本文主要从生物学角度出发，从遗传学、神经内分泌学、行为学和神经解剖学方面综述了同性恋发生的神经内分泌机制。

CM serves as a forum for the exchange of information on etiopathogenesis, epidemiology, diagnosis, therapy, and prevention of infectious and noninfectious diseases of laboratory animals; naturally occurring and induced models of human disease; research applications of animals; and the biology of laboratory animals.

比较医学》作为一个论坛，致力于关于发病机理，流行病学，诊断，治疗和预防实验室动物的传染和非传染疾病，自然发生和外因导致的人类疾病模式，动物研究应用和实验室动物的生物学等方面的信息交流。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。