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EvolutionDarwin's Lost World: The Hidden History of Animal Life. By Martin Brasier . 2009. Oxford University Press, New York. (ISBN 978-0-19954897-2). 260 pages. Hardcover. $34.95. 达尔文的失落世界:动物生命的隐藏历史。作者:Martin Brasier。2009. 牛津大学出版社,纽约。(ISBN 978-0-19954897-2)。260页。精装书。34.95美元。
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2010-03-01 DOI: 10.1525/ABT.2010.72.3.13.B
M. Battaglia
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引用次数: 0
EvolutionThe Tangled Bank: An Introduction to Evolution. By Carl Zimmer . 2010. Roberts and Company, Greenwood Village, Colorado. (ISBN 978-0981519470). 385 pages. Hardback. $59.95. 《纠结的河岸:进化论导论》卡尔·齐默著。2010. 罗伯茨公司,格林伍德村,科罗拉多州。(ISBN 978 - 0981519470)。385页。精装版。59.95美元。
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2010-03-01 DOI: 10.1525/ABT.2010.72.3.13.C
S. Mitchell
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引用次数: 0
Animal BehaviorAnimal Migration: Remarkable Journeys in the Wild. By Ben Hoare . 2009. University of California Press. (ISBN 978-0-520-25823-5). 176 pages. Hardcover. $34.95. 动物行为,动物迁徙:野外的非凡旅程。本·霍尔著。2009. 加州大学出版社。(ISBN 978-0-520-25823-5)。176页。精装书。34.95美元。
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2010-02-01 DOI: 10.1525/ABT.2010.72.2.14.C
C. Hibbitt
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引用次数: 0
From the Beginning 从一开始
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2010-01-01 DOI: 10.1525/abt.2010.72.2.13
M. Flannery
There's a tremendous amount of evidence for evolution, but biologists are always looking for more. As with any delving into the past, this isn't easy to do. Time erases evidence. A number of wonderful sites of prehistoric cave art have been found over the years, from Altamira in the 19th century to Chauvet in the 1990s. But the experts still haven't come up with a plausible explanation for why this art was created (Curtis, 2006). Questions still remain: were these images meant to celebrate the diversity of life or to bring blessing upon a future hunt? Such questions are what make history both a frustrating and a fascinating endeavor, and no part of history is more frustrating or fascinating than investigating early life on earth. If it's hard to piece together what was going on in caves 20 or 30 thousand years ago, it's not surprising that figuring out what occurred 3 or 4 billion years ago would be much more difficult. The amazing thing is that it isn't totally impossible. Biologists, chemists, physicists, and geologists have worked together to come up with some plausible scenarios for the early years of life on earth. Sure, there's still much controversy about some of their explanations, but there has also been a lot of progress since the experiments by Stanley Miller and Harold Urey in the 1950s in which they attempted to recreate the chemical environment of the early earth. In this column, I want to explore several lines of evidence that together give us at least a sketchy view of what early life was like. That's not bad, considering that many of us can't trace our ancestors back more than two or three generations. Physicists and geologists agree that the earth is about 4.5——4.6 billion years old. There is also …
有大量的进化证据,但生物学家一直在寻找更多的证据。与任何对过去的钻研一样,这并不容易做到。时间会抹去证据。多年来,从19世纪的阿尔塔米拉到20世纪90年代的肖韦,人们发现了许多史前洞穴艺术的奇妙遗址。但是专家们仍然没有提出一个合理的解释为什么这种艺术被创造出来(柯蒂斯,2006)。问题仍然存在:这些图像是为了庆祝生命的多样性,还是为未来的狩猎带来祝福?正是这些问题使历史既令人沮丧又令人着迷,而历史的任何部分都不会比研究地球上的早期生命更令人沮丧,也更令人着迷。如果说要拼凑出2万或3万年前洞穴里发生的事情都很困难,那么要弄清楚30亿或40亿年前发生的事情就困难得多了。令人惊奇的是,这并非完全不可能。生物学家、化学家、物理学家和地质学家共同努力,提出了一些关于地球早期生命的合理设想。当然,他们的一些解释仍然存在很多争议,但自20世纪50年代斯坦利·米勒和哈罗德·尤里试图重建早期地球的化学环境的实验以来,也取得了很大进展。在这篇专栏文章中,我想探讨几条证据线索,这些证据至少能让我们大致了解早期生命是什么样的。考虑到我们许多人的祖先只能追溯到两三代,这还不错。物理学家和地质学家一致认为地球大约有45 - 46亿年的历史。还有……
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引用次数: 0
Learning About Biology 学习生物学
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2010-01-01 DOI: 10.1525/ABT.2010.72.1.12.C
J. Váázquez
Study and Communication Skills for the Biosciences . By Stuart Johnson and Jon Scott . 2009. Oxford University Press. (ISBN 978-0-19-921983-4). 235 pp. Paperback. $39.95. Johnson and Scott, professors at the University of Leicester in the United Kingdom, have developed a guide that addresses study and presentation strategies for college students in the biological sciences. The book is composed of 14 chapters that cover general topics from note-taking skills up to poster preparation and study skills for exams. The beginning chapters are very general and struck me as common-sense knowledge for any dedicated student, regardless of the subject area. The narrative picks up when the authors discuss specific topics, using biology as …
生物科学的学习和沟通技巧。斯图尔特·约翰逊和乔恩·斯科特著。2009. 牛津大学出版社。(ISBN 978-0-19-921983-4)。235页,平装本。39.95美元。英国莱斯特大学(University of Leicester)的Johnson和Scott教授为生物科学专业的大学生制定了一份关于学习和演讲策略的指南。这本书由14章组成,涵盖了从笔记技巧到海报准备和考试学习技巧的一般主题。开头的章节非常笼统,给我的印象是,对于任何一个有献身精神的学生来说,这都是常识性的知识,无论这个学科是什么领域。当作者讨论特定的话题时,故事就开始了,用生物学作为……
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引用次数: 4
Encouraging New Manuscripts in Critical Areas of Biology Education 鼓励生物教育关键领域的新稿件
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2010-01-01 DOI: 10.1525/ABT.2010.72.1.3
Bill Leonard
Here is a brief discussion of the kinds of new manuscripts I would like to encourage. The American Biology Teacher needs articles in the critical areas of biology education listed below, all of which tend to be underrepresented in K——16 biology classroom curricula and instruction. •• Inquiry Biology Learning Activities in General This means authentic inquiry, not just attempts at inquiry or overly directed inquiry. Authentic inquiry means that students are engaged actively and meaningfully in all aspects of the inquiry process. These include (a) making interesting observations that will lead to puzzling questions; (b) formulating questions that have high potential to be addressed through classroom (or extended classroom) research; (c) crafting researchable hypotheses that predict the relationship between independent and dependent variables; (d) identifying assumptions and limitations of a specific research study; (e) determining an experimental plan with procedures that address the hypotheses; (f) listing materials, equipment, and resources needed, including space and time; (g) crafting a plan for data collection and the type of data intended; (h) stating a proposed …
这里简要讨论一下我想鼓励的新手稿的种类。美国生物教师需要以下列出的生物教育关键领域的文章,所有这些在K - 16生物课堂课程和教学中往往代表性不足。这意味着真正的探究,而不仅仅是探究的尝试或过度指导的探究。真实的探究意味着学生积极而有意义地参与探究过程的各个方面。这包括(a)进行有趣的观察,从而引出令人困惑的问题;(b)提出极有可能通过课堂(或扩展课堂)研究解决的问题;(c)提出可研究的假设,预测自变量和因变量之间的关系;(d)确定特定研究的假设和局限性;(e)根据处理假设的程序确定实验计划;(f)列出所需的材料、设备和资源,包括空间和时间;(g)制定数据收集计划和拟收集的数据类型;(h)说明拟议的……
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引用次数: 4
Microbial Resistance to Triclosan: A Case Study in Natural Selection 微生物对三氯生的耐药性:自然选择的案例研究
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2009-12-11 DOI: 10.2307/20565376
A. Serafini, D. Matthews
[ILLUSTRATION OMITTED] Charles Darwin's theory of evolution by natural selection is a cornerstone concept in biology (White, 2007). Natural selection is the mechanism of evolution caused by the environmental selection of organisms most fit to reproduce, sometimes explained as "survival of the fittest" (Mader, 2004). An example of evolution by natural selection is the development of bacteria that are resistant to antimicrobial agents as a result of exposure to these agents (Yazdankhah et al., 2006). Antimicrobials kill off susceptible members of a population, hut cells that have some resistance from the start or that acquire it later through mutation or gene exchange may survive. These survivors are "best fit" in that particular environment where they proliferate (Levy, 2007). While acquisition of knowledge of evolution by natural selection is a seminal goal of science education (NABT, 2008), it is difficult for students to observe this phenomenon directly in their own lives. Perhaps the reason for this is that humans have a generation time of about 25 years. It takes 100 years--a period of time beyond the life expectancy of most people--for four generations of progeny to be traced from the original parents (National Oceanic and Atmospheric Administration, 2008). This sharply contrasts with bacteria that have shorter generation times, in some cases as little as 20 minutes (Tortora, Funke & Case, 2010). Theoretically, that means that over 100 years, about 2,500,000 generations of bacterial descendents could be produced from an original cell. This huge reproductive potential makes bacteria especially well-suited for use in the study of natural selection and, as genetic differences accumulate to produce major transformations, to clearly illustrate evolution. This article describes research on the resistance of wild clonal populations of Escherichia coli and Staphylococcus aureus to triclosan and the subsequent reversion of these resistant bacteria back to wild-type when triclosan is removed from their environment. These experiments can serve as apractical, timely, and engaging model for the study of natural selection in the biology classroom and can be performed either as a long-term open inquiry (Welden & Hossler, 2003) or as a teacher-guided inquiry. * Background Information Triclosan (2, 2, 4'-trichloro-2'-hydroxydiphenyl ether) is a broad-spectrum antimicrobial agent that is effective against bacteria (Perencevich et al., 2001), fungi (McMurry et al., 1998), and viruses (Schweizer, 2001). See Figure 1 for a diagram of triclosan. [FIGURE 1 OMITTED] Invented at Ciba, triclosan is the generic name of the chemical that Ciba sells as Irgasan[R] (Ciba.com, 2008). Triclosan is also used in plastics and clothing by other manufacturers under the name Microban[R], and used in acrylic fibers as Biofresh[R] (Glaser, 2004). It was introduced as a surgical scrub in 1972, typically at 0.3% bactericidal concentrations, and used primarily to limit the spread of i
查尔斯·达尔文的自然选择进化论是生物学的基石概念(White, 2007)。自然选择是由环境选择最适合繁殖的生物所引起的进化机制,有时被解释为“适者生存”(Mader, 2004)。自然选择进化的一个例子是由于暴露于抗微生物药物而产生对这些药物具有耐药性的细菌(Yazdankhah等人,2006年)。抗菌剂会杀死种群中易感的成员,但从一开始就有一些耐药性或后来通过突变或基因交换获得耐药性的细胞可能存活下来。这些幸存者“最适合”他们繁殖的特定环境(Levy, 2007)。虽然通过自然选择获得进化知识是科学教育的一个重要目标(NABT, 2008),但学生很难在自己的生活中直接观察到这一现象。这可能是因为人类每一代人的寿命大约是25年。从原始父母那里找到四代后代需要100年的时间——这段时间超过了大多数人的预期寿命(美国国家海洋和大气管理局,2008年)。这与产生时间较短的细菌形成鲜明对比,在某些情况下仅为20分钟(Tortora, Funke & Case, 2010)。从理论上讲,这意味着在100年的时间里,一个原始细胞可以产生大约250万代的细菌后代。这种巨大的繁殖潜力使细菌特别适合用于自然选择的研究,并且随着遗传差异的积累产生重大转变,可以清楚地说明进化。本文描述了大肠杆菌和金黄色葡萄球菌野生克隆群体对三氯生的耐药性,以及当三氯生从它们的环境中去除后,这些耐药细菌随后恢复到野生型的研究。这些实验可以作为生物课堂自然选择研究的实用、及时和引人入胜的模型,既可以作为长期开放的探究(Welden & Hossler, 2003),也可以作为教师指导的探究。*背景资料三氯生(2,2,4 '-三氯-2'-羟基二苯醚)是一种广谱抗菌剂,对细菌(Perencevich等人,2001年)、真菌(McMurry等人,1998年)和病毒(Schweizer, 2001年)有效。三氯生的图解见图1。三氯生是汽巴发明的,是汽巴销售的Irgasan化学品的通用名称[R](汽巴网,2008)。三氯生也被其他制造商以Microban的名义用于塑料和服装[R],并以Biofresh的名义用于丙烯酸纤维[R] (Glaser, 2004)。它于1972年作为一种外科磨砂剂引入,通常浓度为0.3%,主要用于限制卫生保健机构感染的传播。自20世纪90年代中期以来,三氯生已经被销售给普通消费者,通常是0.1%的抑菌浓度,现在在我们的生活中无处不在。三氯生用于许多个人护理产品,如牙膏、沐浴露、除臭剂肥皂、护手霜和面霜、漱口水、腋下除臭剂和洗手液。84%的抗菌香皂和100%的抗菌液体香皂含有三氯生。它也被注入到许多家庭用品中,如砧板、台面、拖把、油漆、地砖、壁纸,甚至玩具(Levy, 2000;施魏策尔,2001)。这种做法并不局限于美国,而是一种世界性的现象。每年在抗菌家用产品上花费10亿美元(Glaser, 2004),并且每年以3-7%的速度增长(Jagger, 2008)。2009年对甲型H1N1流感病毒亚型的关注,提高了洗手对感染控制的重要性(美国疾病控制与预防中心,2009年),并可能促使更多地使用抗菌产品。…
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引用次数: 2
The Mirage of Health 健康的幻影
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2009-11-01 DOI: 10.2307/20565381
M. Flannery
I am writing this column in late August, so it's difficult to predict what the H1N1 flu situation will be by like the time it is published towards the end of the year. Since there is already a pandemic, the spread of the virus will likely have picked up more steam by that time, but how much steam it is difficult to forecast So I'm not even going to try. Instead, I will make a prognostication that is a safer bet: there will continue to be health issues of some kind at the end of this year, at the end of this century, and on to the end of this millennium. I am using as my crystal ball a book by Rene Dubos (1901-1982) called Mirage of Health (1959). It seems appropriate to examine this book on the fiftieth anniversary of its publication, because it is at least as relevant today as it was at the time it came out. Also, since this issue of ABT is devoted to health and medicine, this work is a great reminder of the limits of the latter to ensure the former. The book's main argument is that, as the title suggests, the quest for perfect health is an unending one, just as walking towards a mirage is a fruitless task. Dubos contends that the idea that better days are coming, that if we get rid of the latest scourge to health, life will be wonderful and we will to a ripe old age in good health, just isn't going to happen. In other words, finding the "cure" for cancer or HIV infections or ... isn't going to make life wonderful. He cites as support for his view the fact that finding a cure for tuberculosis (TB), the scourge of the 19th century, did not lead to a health utopia. In fact, thanks to life style changes rather than medical advances, the incidence of TB had already decreased significantly even before an antibiotic treatment for this bacterial infection became available in the 1950s. I have been reminded of Dubos's book frequently over the years since I first read it in the 1970s. Most particularly, it came to mind in the 1980s when HIV and then Ebola virus entered our consciousness. For those who don't remember these times, both infections came as rather a shock to the American public who had become accustomed to the idea that infectious disease was no longer fatal. To put it very simply, bacterial infections could be treated with antibiotics and viral diseases prevented with vaccines. Then AIDS arrived, an infectious, incurable and in those early years, almost inevitably fatal, disease. This was not something we were prepared for because many of us, the baby boomers who had swelled the population, had never experienced the years when bacterial pneumonia was dangerously common and a bad cut could lead to an uncontrollable infection. Microbiology How could Dubos have been so prescient when most Americans were shocked by this onslaught and the others to follow? First of all, he was a microbiologist. He was already aware, more than most people of the time, that bacteria were developing resistance to antibiotics, that the reign of these drugs was likely
我是在八月底写这篇专栏的,所以很难预测H1N1流感的情况会是什么样子,就像它在年底发布的时候一样。由于已经有了大流行,到那时病毒的传播可能会加速,但很难预测有多快,所以我甚至不会去尝试。相反,我将做出一个更安全的预测:在今年年底,在本世纪末,直到本世纪末,将继续存在某种健康问题。我用Rene Dubos(1901-1982)的书《健康的幻影》(Mirage of Health, 1959)作为我的预言球。在这本书出版五十周年之际审视它似乎是恰当的,因为它在今天至少与它出版时一样具有现实意义。此外,由于这一期ABT致力于健康和医学,这项工作是一个很好的提醒,后者的限制,以确保前者。这本书的主要论点是,正如书名所示,对完美健康的追求是永无止境的,就像走向海市蜃楼是一项徒劳的任务一样。杜博斯认为,美好的日子即将到来,如果我们摆脱了对健康的最新祸害,生活将会很美好,我们将健康地进入老年,这种想法是不会发生的。换句话说,找到癌症或艾滋病毒感染的“治疗方法”或……不会让生活变得美好。他引用了一个事实来支持他的观点,即找到治疗结核病的方法(结核病是19世纪的祸害)并没有导致健康乌托邦。事实上,由于生活方式的改变而不是医学的进步,结核病的发病率在20世纪50年代出现抗生素治疗这种细菌感染之前就已经显著下降了。自上世纪70年代第一次读到杜博斯的书以来,多年来我经常想起这本书。尤其是在20世纪80年代,当艾滋病毒和埃博拉病毒进入我们的意识时,它出现在我们的脑海中。对于那些不记得那段时间的人来说,这两种传染病对美国公众来说都是相当震惊的,因为他们已经习惯了传染病不再致命的想法。简单地说,细菌感染可以用抗生素治疗,病毒性疾病可以用疫苗预防。后来,艾滋病来了,这是一种传染性疾病,无法治愈,在早期,几乎不可避免地会致命。这是我们没有准备好的,因为我们中的许多人,婴儿潮一代的人口膨胀,从来没有经历过细菌性肺炎是危险的常见,一个严重的伤口可能导致无法控制的感染。【微生物学】当大多数美国人都对这次袭击和随后的袭击感到震惊时,杜博斯怎么能如此有先见之明呢?首先,他是个微生物学家。他比当时的大多数人都更清楚地意识到,细菌正在对抗生素产生耐药性,这些药物的统治很可能是短暂的,只有人类聪明地努力,才能领先微生物一步,才能延续下去。杜博斯于20世纪初在法国出生并接受教育,当时法国的微生物学仍然深受路易·巴斯德的知识遗产的影响。他来到美国,职业生涯的大部分时间都在纽约的洛克菲勒大学(Rockefeller University)担任研究员。在那里,他发现了革兰西丁,这是第一种临床测试的抗生素。虽然它没有被证明是一种有效的药物,但杜博斯的研究确实提供了关于培养物和活生物体中抗生素动力学的有用信息。当盘尼西林被发现并被开发成一种药物时,他参与了在美国完成的早期工作。他还研究了肺结核和肺炎。正是杜博斯对细菌如何对抗生素产生耐药性的研究,使他认为健康的主题是海市蜃楼。…
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引用次数: 21
From the President: Irrational Fear or Irrational Complacency: The Need for Science and Health 来自总统:非理性的恐惧或非理性的自满:科学和健康的需要
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2009-11-01 DOI: 10.2307/20565371
John C. Moore
[ILLUSTRATION OMITTED] It is my last letter to write this year as President of NABT. This issue of The American Biology Teacher is on Health and Medicine. What a teachable moment we are living in right now. Let me ask a question. What do the years 1918, 1957, 1968, and 2009 have in common? Many of you know that those dates are the years for the most pandemics in the U.S. and the world. In 2006, Dr. Gregory Poland, Director of the Mayo Clinic's Vaccine Research Group, spoke to my non-majors biology class (in which his daughter was a student) on the avian flu. Dr. Poland is a leading expert in vaccinology and clinical research, and in the field of biodefense. He and his talk were mesmerizing. Why shouldn't they be? As Professor of Medicine and Infectious Diseases, Molecular Pharmacology and Experimental Therapeutics; Associate Chair for Research, Department of Medicine; Director of the Immunization Clinic and the Program in Translational Immunovirology and Biodefense at the Mayo Clinic (whew, what a long title), he carries a lot of authority whenever he talks on anything relating to viruses. It was interesting that the local news media rushed to take video and questions after he spoke to the class. Dr. Poland lectured on the avian flu and kept the students on the edge of their seats as he weaved the current information about the "bird flu" (an H5N1 virus) and counseled the class that another pandemic would come. No! He did not say the avian flu was a pandemic. That would be in error. No! He wasn't saying the bird flu was going to be the next pandemic. That would be creating fear. What Dr. Poland was able to accomplish very well was to make the non-major biology students aware of what efforts would have to be in place to combat the next pandemic. As he laid the groundwork for what could and would happen m the future, and the efforts that were needed to prepare the world for the next pandemic (whenever it came), he challenged the class with this question: "Is it irrational fear or irrational complacency that our country is in?" He described some of the steps necessary for the government, industry, medical community and the population to work together to be prepared. Dr. Poland was working with the U.S. government and World Health Organization to help influence a worldwide mechanism for dealing with pandemics; to move us out of what he called "irrational complacency." His passion was evident in his talk that the world needed to coordinate its efforts to combat the next viral pandemic, whenever it came. The class was honored to be exposed to that level of information and to such a brilliant scientist and educator who provided the answers to their questions. We are now in the midst of the latest pandemic and we do not know how it will fully play out in our country and the world. His words could not have been more prophetic as it was only two years later that the H1N1 virus emerged out of a town in Mexico and, within a five-month period, reached pandemic
这是我作为NABT主席今年写的最后一封信。本期《美国生物教师》是关于健康和医学的。我们现在生活在一个多么受教育的时刻。让我问一个问题。1918年、1957年、1968年和2009年有什么共同之处?你们中的许多人都知道,这些日子是美国和世界上最流行的年份。2006年,梅奥诊所疫苗研究小组主任格雷戈里·波兰博士在我的非专业生物课上(他的女儿是学生)讲了禽流感。波兰博士是疫苗学和临床研究以及生物防御领域的主要专家。他和他的谈话令人着迷。为什么不应该呢?医学和传染病学、分子药理学和实验治疗学教授;医学院研究副主任;他是梅奥诊所免疫诊所和转化免疫病毒学和生物防御项目的主任(哇,好长的头衔),每当他谈到任何与病毒有关的事情时,他都很有权威。有趣的是,当地的新闻媒体在他向全班演讲后争相拍摄视频和提问。波兰博士就禽流感进行了演讲,当他编织有关“禽流感”(一种H5N1病毒)的最新信息时,他让学生们紧张不已,并告诫全班同学另一场大流行即将到来。不!他没有说禽流感是一场大流行。这是错误的。不!他并不是说禽流感会成为下一个大流行。那将会制造恐惧。波兰博士所做的非常出色的工作是使非主修生物学的学生意识到必须作出哪些努力来抗击下一次大流行病。他为未来可能发生和将要发生的事情奠定了基础,并为世界为下一次大流行(无论何时到来)做好了准备而做出了必要的努力,他向全班提出了这样一个问题:“我们的国家正处于非理性的恐惧还是非理性的自满之中?”他描述了政府、行业、医学界和民众共同努力做好准备的一些必要步骤。波兰博士正在与美国政府和世界卫生组织合作,帮助影响一个应对流行病的全球机制;让我们摆脱他所谓的“非理性自满”。他在讲话中表示,无论下一次病毒大流行何时到来,世界都需要协调努力,抗击它。这个班级很荣幸能够接触到如此丰富的信息,并接触到这样一位杰出的科学家和教育家,他为他们的问题提供了答案。我们现在正处于最近的大流行之中,我们不知道它将如何在我国和世界上充分发挥作用。他的话非常有预见性,因为仅仅两年后,H1N1病毒就从墨西哥的一个小镇出现,并在五个月内达到了大流行的程度。…
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引用次数: 0
An Inexpensive, Simple, Homemade "Microtome" to Prepare Thin Sections of Tissues for Microscopic Study 一种廉价、简单、自制的“显微切片机”,用于制备用于显微研究的组织薄片
IF 0.5 4区 教育学 Q4 BIOLOGY Pub Date : 2009-11-01 DOI: 10.2307/20565379
N. Dubowsky
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引用次数: 1
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American Biology Teacher
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