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Once you have a difference that occurs, two cells are difference, those differences can propagate as the cells continue to divide.
一旦产生差异,产生两个不同的细胞,这些差异会伴随着,细胞分裂过程代代相传
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All these cells come from the bone marrow and biologists have traced the formation of these cells in great detail.
所有这些细胞都来自骨髓,而生物学家已经很详细地,研究了这些细胞的形成过程
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You need to be able to integrate that information into a response, and that happens through these biochemical reactions.
体内的细胞要整合信息并作出反应,这个过程就通过这些生化反应来完成
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They're everywhere in cells throughout your body and they are responsible for lots of the biochemistry of cell/cell interaction and signaling.
它们在身体各处的细胞中都有,并负责很多细胞间的相互作用,及信号转导的生化过程
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It's really just the result of the virus dividing within cells of your skin, and producing a lot of dead cells.
这便是病毒在皮肤细胞内部,分裂的结果,这个过程会产生大量的死亡细胞
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I'm going to talk next week, or next time on Thursday, about the processes that lead to differences between cells.
下周或者下次周四的课上,我会谈谈细胞进行不同演变的过程
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When they do that they can actually engulf the bacteria in a process called phagocytosis and break them down into antigens.
免疫细胞确实是将细菌整个吞进了肚内,这一过程称为吞噬作用,并将细菌分解成小抗原
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This process of cell proliferation or cell division is, of course, very important during development of an embryo.
细胞增殖和分裂的过程,在胚胎发育中至关重要
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The cell is going to experience something different inside because both receptors were activated instead of just one.
细胞内部将经历不同的生理过程,因为是两种受体被激活而不是一种
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Fertilization of these two where these two cells join occurs in the distal part of the fallopian tube.
受精的过程,就是这两种细胞,在输卵管壶腹部相互结合
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When they bind, they produce some change in the receptor molecule which is experienced inside the cell.
当它们结合后,会使受体分子发生改变,这个过程发生在细胞内部
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One of the ways they can do this is if there's no space in between these cells.
要完成吸收过程,肠道上皮细胞之间必须没有空隙
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What I want you to remember now is that abundant cell proliferation takes place during development.
这节课我希望你能记住,发育过程中伴有大量的细胞增殖过程
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Mitosis is an orderly sequence of events by which one parent cell becomes two daughter cells.
有丝分裂是指一个亲代细胞,变为两个子细胞的有序的过程
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It does that through a complex set of sort of cellular interactions, and it turns out also gene rearrangements if you go further to study that.
而这此过程中,发生了一系列复杂的细胞间的相互作用,也会涉及到基因重排,如果你们深入学习的话就会学到
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This process of using a biological event like resistance to Ampicillin in order to pick out the cell population that you're interested in is called selection.
这个利用生物特性,如对氨苄青霉素的抗性,来挑出你所感兴趣的细胞的过程叫筛选
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Well, what if this division takes place in an environment where there's one kind of extra cellular matrix here and another kind of extracellular matrix here?
那如果在细胞分裂的过程中,两个子细胞的细胞外基质不同,会对它们产生什么影响
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In that process, cells become different in ways that appear to be highly organized.
这个过程中,细胞通过某种高度有序的方式进行分化
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It happens through a very regulated, coordinated slow process of what is called differentiation.
这是通过一种严格协调调控的过程完成的,这个过程我们称为细胞分化
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This is one of the kinds of differences that develop that happens during development and cells somehow know where they are within this developing asymmetrical organism.
这是发育过程中,发生的一种变化,而且细胞似乎知道它们,在这个非对称发育生物体中的位置
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As division happens and the developing organism acquires more and more cells, individual cells become differentiated, they become more and more like their final mature form.
分裂过程不断发生,以及发育中的有机体对更多细胞的需求,细胞个体便逐渐分化,它们越来越接近成熟细胞的样子
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The way that the cell experience it is through some sort of biochemical changes.
细胞发生某种生物化学变化,以完成这个过程
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The general word for that process of making differences between cells is differentiation.
一言以蔽之,细胞之间产生差异的过程称为分化
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We talked about last time that part of the process of going from this single cell to multi cellular many celled organisms like we are is cell division.
我们上节课说过,从一个单细胞分裂形成大量细胞,构成的器官的过程,叫做细胞分裂
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Well, if you knew a cell that could serve as a host for a virus, you could use this process of cell culture to make large quantities of virus,right?
如果你知道细胞可以变成病毒的宿主,可以用培养细胞的过程,制造大量病毒,对吧
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The size of the cells could be different; maybe mitosis is asymmetrical in some way so that one of the cells ends up being bigger than the other.
细胞大小可能会不同,也许有丝分裂的过程是不对称的,致使子细胞一个大一个小
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Release of tens of thousands, hundreds of thousands of new virus particles from one individual cell such that the cell gets killed in the process of replicating the virus.
从一个独立的细胞中,释放出数以万计甚至,数以十万记的新病毒,这会使细胞就会在,病毒复制的过程中被杀死
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So it stimulates these myeloid cells to develop along this pathway.
它就是在髓细胞的发育过程中,发挥刺激生成作用的
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Now, sometimes those--that release occurs without the cell itself dying.
有时,这个过程可以在,宿主细胞不会死亡的情况下完成
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It goes - going through this process of amplifying divisions, every division increasing the number of cells by a factor of two and these cells becoming more differentiated around the way.
它经历了一系列扩增性的分裂过程,每次分化,细胞数目都翻一番,而在此过程中细胞分化得更成熟
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