Embryonic Development and Induction
Embryonic Development and Induction
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DOI：
10.1093/aesa/32.3.657
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发表时间：
1938-10
期刊：
影响因子：
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通讯作者：
Geo H Smith;R. R. Bensley-R.;L. Stone
中科院分区：
文献类型：
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作者：
Geo H Smith;R. R. Bensley-R.;L. Stone
95病毒的妊娠，从似乎是分子比例的类型到细菌感中本质上是微生物的类型，至少是（至少）在共同的特征中（至少）区分 - 寄生虫。他推断出来：“我们假设较大的病毒是失去综合其生长和繁殖至关重要的有力量的生物，也许是发酵和共同发射。在大小的情况下，我们将假设越来越多的因素对中间大小的病毒丢失。与他们可以感染的特定细胞不同，我们假设的结构将是惰性的，并且在正确的细胞中悬浮了。来自宿主细胞的必要发酵系统或利用这些系统在其附近的附近。”论文“病毒是decade废的生物形式，通过长期持久的寄生虫主义而降解”，只是为思想提供了机会，并可能会激发讨论。一个能干的细胞学家和他的女儿汇集了一系列关于精心挑选的组织学方法和技术的简短描述。本斯利博士在对细胞的漫长研究中，已经设计了，开发或采用了许多这些方法。尽管某些部分纯粹包含对初学者的建议，但本书在任何组织学实验室中都有一个有用的位置。研究活细胞的研究方法是很好的选择，应包括在微观解剖学中的任何良好课程中。这本书包含一页索引和一页关于该主题文献的良好引用。在其中，西里曼的讲座，世界上杰出的胚胎学家之一汉斯·斯佩曼博士提出了自己和他的学生进行的多年实验结果。这些实验被设计为回答有关确定和控制发展的因素的许多问题。使用实验性胚胎学的方法，在开发胚胎的一部分之间的关系中进行了改变
95 gestion that viruses, from the type which appears to be of molecular proportions to those which are essentially microorganisms in the bacterial sense-have one (at least) distinguishing characteristic in common,-parasitism. From this he deduces: "We would suppose that the larger viruses were organisms which had lost the power to synthesise some factor or factors essential for their growth and multiplication, perhaps a ferment and co-ferments. As we pass down the scale and the viruses diminish in size, we would postulate the loss of more and more factors essential for growth. The intermediate sized viruses would have lost several essential ferment systems, and... the smallest viruses would have lost all ferments and all auto-synthetic potentialities. .. Divorced from the particular cells which they can infect, the structures we postulate would be inert and in a state of suspended animation; within the correct cell, however, they would have at hand all substances required for growth, and they would attract to themselves the requisite ferment systems from the host cells or utilise those in their immediate neighbourhood." A thesis "that viruses are decadent forms of organisms degraded through long persistent parasitism," and that only, offers opportunity for thought, and may well provoke discussion. An able cytologist and his daughter have assembled a series of short descriptions of well-selected histological methods and technics. Many of these methods have been devised, developed, or adopted by Dr. Bensley during his long years of studies on the cell. Although some parts contain advice purely to beginners, the book has a useful place in any laboratory of histology. The procedures for studying living cells are well selected and should be included in any good course in Microscopic Anatomy. The book contains an index and one page of good references to literature on the subject. In these, the Silliman Lectures, Dr. Hans Spemann, one of the outstanding embryologists of the world, presents the results of years of experimentation carried out by himself and his students. These experiments were devised to answer numerous questions regarding the factors which determine and control development. Using the methods of experimental embryology, alterations were made in the relationships between parts of developing embryos