m******g 发帖数: 467 | 1 Nature 14.07.31
推荐:
1. Cellular memory erased in human embryos
The DNA methylation landscape of human early embryos
DNA methylation dynamics of the human preimplantation embryo
小知识:
1. Sperm are speedier in groups |
|
m******g 发帖数: 467 | 2 Nature 14.07.31
推荐:
1. Cellular memory erased in human embryos
The DNA methylation landscape of human early embryos
DNA methylation dynamics of the human preimplantation embryo
小知识:
1. Sperm are speedier in groups |
|
s********3 发帖数: 231 | 3 《科学》对STAP手稿的专家评审意见曝光
《科学》对传说中的STAP细胞论文的三名评审专家意见,过去一直被雪藏,今天终于
被曝光。专家对这一研究的评价不高,认为非常全面的描述性研究,如果结果确定,可
能导致发育生物学大厦的颠覆,其实是不相信这种研究结论。因为没有当时的投稿件,
所以没有办法对这些评价进行更深入分析。不过这些资料显然都在某个地方,只是拥有
的人不愿意拿出来。
Retraction Watch readers are of course familiarwith the STAP stem cell saga,
which was punctuated by tragedy last month whenone of the authors of the
two now-retracted papers in Nature committed suicide.
In June, Science‘s news section reported:
Sources in the scientific community confirm that early version... 阅读全帖 |
|
s******r 发帖数: 1245 | 4 这篇文章做出来的结果其实真没什么意思,在人的embryo里能work,效果不高,有off-
target,这些结果基本都是预料中的,做不做大家都信,对field一点帮助都没有,也
就中国embryo不值钱能烧,在美国收这近百个embryo做这实验难多了,费效比太差。
nature science据是正常的,如果他能放卫星说效率能做到90%啦,或者有办法控制off
target不产生mutation等等,看看nature还会不会装ethical的比,肯定是立马收了发
表封面 |
|
a*********r 发帖数: 296 | 5 一定是个好宝!医生这么做也是对的,只冻好的,要不然也是无用功.祝MM好孕!
不划等级,只有好的embryo才会保存冷冻...这次做frozen cycle,移植前看了解冻的
embryos照片,医生说两个embryos都开始hatching了,其中一个hatching out of shell.
现在怀上了,希望他/她是好宝! |
|
k**a 发帖数: 1124 | 6 really. looks like most JMs did not take any medication for assisted
hatching ah.
I'm taking something called methylprednisolone for 4 fills a day for 4 days,
which i just googled is used to protect the embryo from inflammatory cells.
G. METHYLPREDNISOLONE (Medrol)
This steroid hormone is taken when the Assisted-Hatch procedure is being
done, in conjunction with the Embryo Transfer. It is taken to suppress any
inflammatory reaction that might occur between the embryo(s) and the
endometrial lini |
|
w*****g 发帖数: 124 | 7 我先是在一些ivf的网站上看到很多讨论说要吃菠萝,但是什么时候吃,怎么吃说的不
是很清楚。然后在transfer那天,我的针灸师拿了这篇东西给我,我的ivf诊所也没说
不能吃,而且这家针灸诊所也是ivf诊所推荐的,我就照吃了。
mm这么一说,我也又查了一下,确实有BFP之后菠萝引起流产的说法。其实现在回想起
来我当时也吃了,不过每次都吃的不多就是了。谢谢mm提醒~~
Pineapple may help assist embryo implantation because it contains bromelain.
This proteolytic enzyme breaks down proteins that can inhibit embryo
implantation. For this reason I often recommend you consume a whole, organic
pineapple after ovulation or embryo transfer. Don't avoid eating the core
as it has the high |
|
k**a 发帖数: 1124 | 8 就当下月又可以去玩一圈!祝ET成功!remove polyps很简单的。能打麻药一次搞定也
挺好的。
时并没发现什么,所以可以肯定是最近才有的。
个小手术,他们说不 remove 也不一定会影响 implantation,因为这个 polyp 很小,
但是如果 embryos 万一正好在有 polyp 那里就不会成功 implatation,即使是他们做
ET 时避免那个位置也不能保证 embryos 不移到那里,他们不想 "take the risk"。
更好。所以我就要好好养好身体为一个月后的 ET作准备。唉,自我安慰一下吧,呵呵。
上还要去 做ultrasound and bloodworkd,另外和 Dr Schoolcraft 谈作 polyp
removal 的事儿。
remove 掉,所以可能要把 embryos freeze,下个月再回来 ET。如果不把 polyp 掉就
移植,会影响implantation。
说有可能只是linning 变厚了,folded, 然后 Dr Schoolcraft review 之后觉得不太
像 polyp,我松了口气,谁知今天的 u |
|
I******Y 发帖数: 148 | 9 Me. I did 2 day transfer four years ago and I got pregnant. I only had one
embryo so my re decided to transfer right away. Back then I didn't trust
my re very much as I was very sad about the fact that only one egg got
fertilized. I searched online and could't find many examples of 2 day
transfer. Some articles said that on day2, the embryo is still in tubes.
In fact, the environment in uterus is better than the dishes. Be sure to
ask about the quality of the embryos before transfer. The |
|
y******9 发帖数: 127 | 10 完全同意Mipitas MM 的说法。 我打电话问过lz连接里的Dr. Smith. He said in
his lab, each embryo was cultured individually; therefore, each embryo will
be under the constant mimicked fallopian tube conditions in the incubator
without being interferenced by others. It seems this could only be done at
small clinics. Clinics like Stanford or FPNC have two many patients to take
care, so many patient's embryos will be put inside the same incubator, when
the embryologistst open and close the incubator to check other pe |
|
G**B 发帖数: 371 | 11 〔每日靈修〕
【全年讀經進度】民數記 Numbers 13
(用左鍵按下藍色的經文,該段聖經就會自動出現)
【今日默想禱讀經文】民 13:30-31
迦勒在摩西面前安撫百姓,說:我們立刻上去得那地罷!我們足能得勝。 但那
些和他同去的人說:我們不能上去攻擊那民,因為他們比我們強壯。
【今日信息】你把信心放在誰的身上? By Rev. Andrew Tsai
兩個兄弟同時要去參加一個國家級的甄試,兩個都非常聰明,
充分準備、學識豐富。考試前,兩個人都信誓旦旦,覺得此次上榜非他們莫屬。
前一天新聞報導說,這次考試因為經濟不景氣,所以參加甄試的人非常的多,上榜
率是歷史上首見的新低,競爭非常激烈,錄取率大約只有0.01。也就是說一萬人只有綠
取一人。
哥哥看了新聞報導,心裡涼了半截,心想我一定考不上,因為這太難了。但是弟弟
看了卻越發有信心,覺得這次考試正可以證明自己的努力。
其實他們兩人實力相當,但是為什麼一個覺得一定能成,另外一個卻覺得絕對不能
成呢?關鍵在哪裡?就在一個信心的程度。
摩西差派十二個探子前往迦南地去窺探那地,
當十二個探子回來的時候,... 阅读全帖 |
|
X*******8 发帖数: 3895 | 12 刚才看有人在“请教一个转基因问题”,故把下面一篇文章转过来,没有翻译,有兴趣
的自己看吧。
http://www.holistichealthsecrets.com/alternativehealth/genetica
modified-foods-healthy-to-eat/
Are Genetically Modified Foods Healthy to Eat?
July 14th, 2009adminLeave a commentGo to comments
The topic of Genetically Modified Food (GMOs) can be confusing. On one side
we have big Pharma
companies touting studies that show that Genetically Modified Food is
perfectly safe for consumption. On
the other hand, we have wholistic health groups and speakers s... 阅读全帖 |
|
X*******8 发帖数: 3895 | 13 读读这个吧,没有翻译,有兴趣
的自己看吧。AAEM的人你不因该叫民科了吧?另外,谁把我关于先锋分类的贴删了?每
必要这么害怕吧?
http://www.holistichealthsecrets.com/alternativehealth/genetica
modified-foods-healthy-to-eat/
Are Genetically Modified Foods Healthy to Eat?
July 14th, 2009adminLeave a commentGo to comments
The topic of Genetically Modified Food (GMOs) can be confusing. On one side
we have big Pharma
companies touting studies that show that Genetically Modified Food is
perfectly safe for consumption. On
the other hand, we have wholistic health gr... 阅读全帖 |
|
w*********g 发帖数: 30882 | 14 中文译文:
疫苗中的抗HCG荷尔蒙可导致人类绝育?
http://organichealthadviser.com/archives/does-a-hormone-found-i
Does A Hormone Found In Some Vaccines, Human Chorionic Gonadotrophin (hCG),
Cause Infertility In Humans?
A couple of comments by our readers and an article over at tetrahedron.org
are causing us to ask some hard questions about a hormone called "human
chorionic gonadotrophin" (hCG) and vaccines. Apparently, when the hormone
hCG is added to a vaccine, the human body not only develops antibodies
against what... 阅读全帖 |
|
M*****8 发帖数: 17722 | 15
..........................
Does A Hormone Found In Some Vaccines, Human Chorionic Gonadotrophin (hCG),
Cause Infertility In Humans?
A couple of comments by our readers and an article over at tetrahedron.org
are causing us to ask some hard questions about a hormone called "human
chorionic gonadotrophin" (hCG) and vaccines. Apparently, when the hormone
hCG is added to a vaccine, the human body not only develops antibodies
against what it is being vaccinated for, it also develops antibodies again... 阅读全帖 |
|
o**1 发帖数: 6383 | 16 http://www.bodiestheexhibition.com/newyork/disclaimer.html
This exhibit displays human remains of Chinese citizens or residents which
were originally received by the Chinese Bureau of Police. The Chinese Bureau
of Police may receive bodies from Chinese prisons. Premier cannot
independently verify that the human remains you are viewing are not those of
persons who were incarcerated in Chinese prisons.
This exhibit displays full body cadavers as well as human body parts, organs
, fetuses and embry... 阅读全帖 |
|
s****a 发帖数: 37 | 17 这是body exhibition 网站上公开的尸体来源
http://www.bodiestheexhibition.com/newyork/disclaimer.html
“This exhibit displays human remains of Chinese citizens or residents which
were originally received by the Chinese Bureau of Police. The Chinese
Bureau of Police may receive bodies from Chinese prisons. Premier cannot
independently verify that the human remains you are viewing are not those of
persons who were incarcerated in Chinese prisons.
This exhibit displays full body cadavers as well as human body par... 阅读全帖 |
|
C*I 发帖数: 4736 | 18 这就有些可耻。 你把人,确切的说是死了的人,剥了皮,打开肚子,做成展览品到处
买卖,四处展览赚钱,而不说清楚那些人是谁? 从哪里来的? 怎么来的? 却关心
起了谁问这件事? 谁质疑谁就是法轮功? 那我就告诉你,我没有办点轮子的影子,
德国明镜周刊也没有半点轮子的影子,美国广播公司也没有半点轮子的影子,纽约检
察长办公室也没有半点轮子的影子。那你告诉我,那些满世界展览赚钱的中国人尸体
是哪里来的? 都是谁? 特别是那个被被划开肚子,露出小孩的怀孕女尸体到底是谁
? 犯的啥罪? 这家人有什么理由把这具尸体给你让你塑化后拿去到处展览的?
至于贼说自己不是贼,就和薄熙来把钱收到老婆账上,存在保险柜里,买了别墅装修后
出租给别人说他没有贪污受贿,清白如纸一样滑稽和可耻。 这个不需要薄熙来自己,
儿子和他的轮子为他辩解。
好了,以下是premier exhibittions 公司的声明,你自己看了:
Bodies...The Exhibition Disclaimer
This exhibit displays human remains of Chinese citizens or reside... 阅读全帖 |
|
w*********g 发帖数: 30882 | 19 China’s Massive Eugenics Project To Choose High-IQ Embryos
by JacobSloan on February 22, 2013 in News
Via Edge.org, NYU evolutionary psychologist Geoffrey Miller on how the
biggest eugenics push in history is just unfolding, which he feels will
dramatically shape the future:
China has been running the world’s largest and most successful eugenics
program for more than thirty years, driving China’s ever-faster rise as the
global superpower. When I learned about Chinese eugenics this summer, I was
... 阅读全帖 |
|
发帖数: 1 | 20 HONG KONG -- At 28, Dai Wenyuan quit his job developing artificial
intelligence software for Chinese internet giant Baidu to launch his own
company. It was a smart move: his AI start-up quickly attracted an initial $
4 million investment from Sequoia Capital China in 2015.
Three years later, Dai's company is capturing attention for developing a
medical tool that uses AI to predict whether patients are at risk of
developing diabetes. His company, 4Paradigm, said its accuracy rate was 88%.
Key to ... 阅读全帖 |
|
M*****n 发帖数: 16729 | 21 OCT,
上次看一nature method paper, 用这个看drosophila embryos,和zebrafish embryo
俺老板说要买这个,结果俺journal club这个paper, 比较一下跟confocal 和two-
photon.
老板就觉得OCT没啥特别好了。 |
|
M*****n 发帖数: 16729 | 22 yes, we discussed about recent publications on this topic,
but very few studies.
it requires a quite sophisticated setup to do this on rat embryos.
we figured for fish embryos, this is a quite easy job to apply ultrasound. |
|
w*********g 发帖数: 30882 | 23 【 以下文字转载自 Military 讨论区 】
发信人: wayofflying (小破熊), 信区: Military
标 题: 注意:不要再接受任何美国政府要求注射的疫苗
发信站: BBS 未名空间站 (Sun Nov 27 17:00:02 2011, 美东)
中文译文:
疫苗中的抗HCG荷尔蒙可导致人类绝育?
http://organichealthadviser.com/archives/does-a-hormone-found-i
Does A Hormone Found In Some Vaccines, Human Chorionic Gonadotrophin (hCG),
Cause Infertility In Humans?
A couple of comments by our readers and an article over at tetrahedron.org
are causing us to ask some hard questions about a hormone called "human
chorionic gonadotrophi... 阅读全帖 |
|
n**m 发帖数: 463 | 24 I had empty sac twice. The last time was in February this year. Both of the
empty sac pregnancies terminated with D&C because the embryo stopped
developing for two weeks while the Hcg was still high. Three months after my
last D&C procedure I got pregnant again. Now I am 4 months pregnant with a
healthy baby. My OB seemed not too worried about my previous history. She
just thought the embryo were not healthy. The advantage of D&C is that you
can get preganent again sooner than a nature miscarrig |
|
|
B*W 发帖数: 1341 | 26 这事儿不是n多人普及过n多回了么?
The following question was answered by an expert in the appropriate field:
Q
I'm pregnant and I have to use computers for a few hours a day and I know
electric appliances also emit radiation. How harmful is all of this to me
and my baby?My friend suggests that I buy radiation protection suits.
According to their advertisements, the garments are made from a kind of
fiber interwoven with antiradiation material. Do you think it works? Should
I wear it?
问题:我现在怀孕了,每天需要用电脑几个小时,我知道电器也... 阅读全帖 |
|
B*W 发帖数: 1341 | 27 这事儿不是n多人普及过n多回了么?
The following question was answered by an expert in the appropriate field:
Q
I'm pregnant and I have to use computers for a few hours a day and I know
electric appliances also emit radiation. How harmful is all of this to me
and my baby?My friend suggests that I buy radiation protection suits.
According to their advertisements, the garments are made from a kind of
fiber interwoven with antiradiation material. Do you think it works? Should
I wear it?
问题:我现在怀孕了,每天需要用电脑几个小时,我知道电器也... 阅读全帖 |
|
M*******c 发帖数: 4371 | 28 These dead bird or embryo has to be dead for a while to be qualified as a
MAODAN, which means they are rottedd.
They are rotted dead bird embryo. |
|
t******g 发帖数: 17520 | 29 第三线, 是我自己想出来的
现在又想出来一个“关键”的
因为外面的世界过度文明(那两个修补尸体的人的对话, 出生的人都是要经过筛选的
), 所以建造旧时期来给大家刺激
-------------------------------------------
但是的原话大概是 “if they know you are so dumb, you won't pass the test(?)
as embryo”
他用的embryo 这个词, 而且, 在这个阶段是有可能被杀死的?!!!!!
那么
我的石破惊天猜测是,其实真实的世界已经基本没有真人了, 新一代人因为某种原因
, 主动或者被动地不生娃了, 大家都TMD是
尼玛 ---------------克隆人!!!!!!!!!!!!!!!!!!!!!!!!!
!!!
克隆人是没有家庭的概念, 一切都是受到控制的,基因,中的各种因素, 都受到了编
帜, 出生, 到受教育, 到工作, 所有都是预先制定好的, social mobility基本很
难, 这是另外一种MIB说的 Chaos不是吗?
所以那个Asian想要做coder, 他的part... 阅读全帖 |
|
t******g 发帖数: 17520 | 30 第三线, 是我自己想出来的
现在又想出来一个“关键”的
因为外面的世界过度文明(那两个修补尸体的人的对话, 出生的人都是要经过筛选的
), 所以建造旧时期来给大家刺激
-------------------------------------------
但是的原话大概是 “if they know you are so dumb, you won't pass the test(?)
as embryo”
他用的embryo 这个词, 而且, 在这个阶段是有可能被杀死的?!!!!!
那么
我的石破惊天猜测是,其实真实的世界已经基本没有真人了, 新一代人因为某种原因
, 主动或者被动地不生娃了, 大家都TMD是
尼玛 ---------------克隆人!!!!!!!!!!!!!!!!!!!!!!!!!
!!!
克隆人是没有家庭的概念, 一切都是受到控制的,基因,中的各种因素, 都受到了编
帜, 出生, 到受教育, 到工作, 所有都是预先制定好的, social mobility基本很
难, 这是另外一种MIB说的 Chaos不是吗?
所以那个Asian想要做coder, 他的part... 阅读全帖 |
|
D*******1 发帖数: 11303 | 31 【 以下文字转载自 Animals 讨论区 】
发信人: iForpus (coelestis), 信区: Animals
标 题: 尼康微观世界摄影大赛作品 精彩纷呈!
发信站: BBS 未名空间站 (Thu Oct 18 18:50:46 2012, 美东)
今年是第38届,优胜者将在一周后公布,建议看原帖大图,链接在下面。
What you looking at? This picture by Nikola Rahme from Budapest, Hungary,
shows a parasitic wasp peering into the lens of a microsope.
See no evil, speak no evil, detect the precise
location of evil using ultrasonic echoes: This image by University of
Cambridge researcher Dorit Hockman shows embryos of the black mastiff bat.
Spiky:... 阅读全帖 |
|
n**b 发帖数: 13203 | 32 成像技术不同而已。。。
We used a special medical endoscope with an integrated camera. This gave us
much better access, so that we could film inside such places as a kangaroo
pouch.' But there is only so far that cameras can go. 'You can't just stick
a camera into an animal's womb because you'd end up killing the embryo,'
says Peter.
Where the photographic and scanning efforts ended, computer imagery took
over. A team of model-makers was enlisted to recreate the embryos at various
stages. 'These guys had an... 阅读全帖 |
|
s******y 发帖数: 28562 | 33 Thee balls and nose holes are actually pretty far away in early embryo
development.
The balls are dropped down from the belly in the late stage, that is why
they are finally close by.
The nose hole in the skull of most animal are actually pretty far way (think
about dinosaur and birds). In human, it is because our face bone are not
fully developed, therefore creating the illusion.
And those single organ, in early embryo they are right in the middle. It is
only in late stage they are squeezed to ... 阅读全帖 |
|
l**********n 发帖数: 675 | 34 进化论在科学上的种种难题
一 进化论若干证据分析
(一)胚胎重演论
大多数高中生物学课本中都有一张胚胎发育图,显示鱼、蝾螈、乌龟、鸡、猪、牛、兔
、人等动物在胚胎发育不同阶段的侧面图,其原版收藏在伦敦大学的Bodleian图书馆,
它的作者是十九世纪德国Jena大学的生物学教授海克尔(Ernst Haeckel)。从这张图
得出的结论是,虽然这些动物成年后形态各不相同,但是由于它们是由共同的祖先进化
而来,所以在胚胎发育过程中均有一个形态相似的阶段,这就是“胚胎重演论”(
Ontogeny recaptulates phylogeny)。
可以用“日晷模型”(Hourglass model)来阐述胚胎重演论,其横轴显示进化过程中
形态上的差异,纵轴显示胚胎发育时期,就象日晷一样,胚胎早期都是受精卵,胚胎发
育成熟后,就成了各种形态各异的动物,也就是说,不管这些动物发育成熟后形态上的
差异有多大,但在胚胎发育的某个阶段,其形态仍旧会重演一个类似鱼的形态。这个理
论和模型的价值在于,它提示在胚胎发育的过程中,残留物种进化的痕迹。这个理论强
有力地支持了进化论,并且作为进化论的一个主要证据,... 阅读全帖 |
|
j*******7 发帖数: 6300 | 35 【 以下文字转载自 BibleStudy 俱乐部 】
发信人: jmsma2007 (James), 信区: BibleStudy
标 题: [ZT] 生物学历史上的一个骗局
发信站: BBS 未名空间站 (Fri Nov 9 18:47:08 2012, 美东)
http://cclw.net/gospel/explore/mdjhl/htm/03.htm
每一个人的胚胎在发育过程中都有一个鱼的时期,外形跟鱼的胚胎相似到离奇的程
度呢?
生物学在自然科学中,是最复杂又是最年轻的一门学科。百多年来不断地成长,到
如今可以说达到突飞猛进的地步。每天在新闻报导中都可以听到有新的生物学发现。不
少人都认为廿一世纪肯定是生物学的世纪。在这成长的过程中,随著观察和实验的增加
,当然会修正过去的一些错误。
但是在1997年,生物学上有一个重大的发现,这个发现不是“修正”过往的错误,
而是揭开了生物学历史上最大的丑闻(注1),也可以说是最大的骗局--科学家兼名
教授海克尔伪造图片、蓄意欺骗。
但是据我所知,在美国除了两家科普性的杂志(注2)(注3)对此做了简单报导之
外,各大城市的报章杂志都丝毫... 阅读全帖 |
|
F*****r 发帖数: 441 | 36 http://songshuhui.net/archives/52003
画鱼不成反类人? ——海克尔和重演论的纠结故事
Ent 发表于 2011-03-30 05:37 | Tags 标签:原创, 海克尔, 演化
你一定看过这样一张图。
1874年《人的演化》第一版插图。
这张无敌手绘的作者是恩斯特·海克尔(Ernst Haeckel,1834 - 1919),著名的德国
生物学家、哲学家和艺术家。经他描述并命名的物种成千上万,我们熟悉的很多生物学
词汇,比如“门(phylum)”,“生态学(Ecology)”,“原生动物(protist)”
也都是他的首创。不过他的成就中,我们最熟悉的应该是所谓的“胚胎发育重演论”(
Recapitulation theory):胚胎发育的阶段和他认为的生物演化的序列是相符合的。
恩斯特·海克尔! 帅不帅!!
可是,这些年来越来越多的声音在指责海克尔爷爷是欺世盗名,说他的重演论是无耻的
造假,进而全盘否定据说是基于他理论而诞生的进化论。专事宣扬智能设计论的“发现
研究所”成员韦尔斯所著《进化论的圣像》(Icons of Evolution)一书,更... 阅读全帖 |
|
j*******7 发帖数: 6300 | 37 这个不是钱锟写的,您也可以攻击攻击。
http://www.sciencemag.org/content/277/5331/1435.1.summary
Science 5 September 1997:
Vol. 277 no. 5331 p. 1435
DOI: 10.1126/science.277.5331.1435a
RESEARCH NEWS
DEVELOPMENTAL BIOLOGY
Haeckel's Embryos: Fraud Rediscovered
Elizabeth Pennisi
Using modern techniques, a British researcher has photographed embryos like
those pictured in the famous, century-old drawings by Ernst Haeckel--proving
that Haeckel's images were falsified. Haeckel once admitted to his peers
that he doctored ... 阅读全帖 |
|
d********i 发帖数: 113 | 38 全文转载如下。
-------------
起初神创造-评进化论的由来与谬误
“起初神创造诸天与地”(创一1),这是圣经开宗明义的第一句话,这也是阿波罗八
号登月宇宙飞船上的宇航员首次到达月球外围时,发到地球上的第一个讯息。
当人观赏宇宙的伟大、恢宏、规则、精确,不能不想到其设计者;当人细察地球上亿万
生物的奇姿多彩、变化万千和巧妙配搭,也不能不联想到生命的源头和创始者(徒三15
);当人站在镜子前观看自己身体构造的奇妙,或在夜深人静时思想内心世界的丰富和
良心感觉的可畏,不能不赞叹“因我受造奇妙可畏;你的作为奇妙,这是我心深知道的
”(诗一三九14)。
然而,自一八五九年达尔文发表《物种起源》(The Origin of Species)(这是达尔
文所提出的解释宇宙、生命和人起源的假说),提出进化学说之后,进化的思想就如野
火蔓延,甚至写进许多国家的教科书里。因着进化论的教育,许多人误把进化论当作科
学真理,而把圣经中所启示的“起初神创造”当作不合科学的神话。这一进化学说蒙蔽
人的心思,拦阻人对宇宙创造者和宇宙存在意义的追寻,贬低人生存的意义和价值,导
致社会道德的退化。
本文通过... 阅读全帖 |
|
w******n 发帖数: 352 | 39 http://www.ors.gatech.edu/rsm.pdf
7.2
Embryo/Fetus Dose Limits
7.2.1
Female radiation workers who become pregnant and declare the pregnancy in
writing to the RSO shall be limited to a dose of 500 mrem for the
gestational period of the fetus.
7.2.2
The female worker who chooses to declare her pregnancy should inform her
supervisor (AU) and the RSO. Appropriate steps to limit exposures and to
ensure that exposure of the embryo/fetus shall not exceed 500 mrem per
gestation period will be determined |
|
f*****Y 发帖数: 20 | 40 胚胎是一个比cell culture复杂的多的系统,需要很多signaling的协调才能正常的发
育。而ES cells只是胚胎的一个cell lineage的culture adaptation,是一个简单的多
的系统。比如说,cdx2 mutant embryo因为trophectoderm defect 无法存活(
embryonic lethal E3.5-5.5), 但是cdx2 ES cells 是可能的。还有nanog mutant
embryo is lethal,Nanog null ES cells 据说可以proliferate many passages. |
|
O******e 发帖数: 4845 | 41 Severe Congenital Disorder Successfully Treated in a Mouse Model for the
First Time
http://www.sciencedaily.com/releases/2011/12/111222103044.htm
ScienceDaily (Dec. 22, 2011) Using a mouse model, Heidelberg University Ho
spital researchers have for the first time successfully treated a severe con
genital disorder in which sugar metabolism is disturbed. The team headed by
Prof. Christian Korner, group leader at the Center for Child and Adolescent
Medicine, demonstrated that if female mice are giv... 阅读全帖 |
|
l**********1 发帖数: 5204 | 42 Thank you for voting!
1. Bat embryo 54.57% (221 votes)
2. Fish head 4.94% (20 votes)
3. Mouse embryo 7.16% (29 votes)
4. Turtle 33.33% (135 votes) |
|
s*****g 发帖数: 7857 | 43 不地道地说
俺投你两票。不用发包子了。那到好成绩告诉大家就成!
Bat 目前最多
1. Bat embryo 48.45% (546 votes)
2. Fish head 2.57% (29 votes)
3. Mouse embryo 8.96% (101 votes)
4. Turtle 40.02% (451 votes)
当初俺给俺孩子钢琴老师的朋友(为上春晚,也干过类似的事情。。。) |
|
g*********5 发帖数: 2533 | 44 In Situ Hybridization of Whole-Mount Mouse Embryos with RNA Probes:
Preparation of Embryos and Probes
Cold Spring Harb Protoc; 2007; doi:10.1101/pdb.prot4822 |
|
n***w 发帖数: 2405 | 45 whole-mount是可以做脑子的,但是一般要先用vibratome或者cryostat先slice一下,
一般几十到100micron吧。
用multi-photon直接in vivo看也只能深入到脑子里100-200micron吧。
"Solvents such as BABB clear the opaque tissues of the embryo by replacing
water, rendering the refractive index of the embryo the same as the solution
."
from http://www.nature.com/nprot/journal/v7/n3/full/nprot.2011.441.html |
|
h******y 发帖数: 351 | 46 终于克隆人了。
Human Embryonic Stem Cells Derived by Somatic Cell Nuclear Transfer
Cell, 15 May 2013
doi:10.1016/j.cell.2013.05.006
Reprogramming somatic cells into pluripotent embryonic stem cells (ESCs) by
somatic cell nuclear transfer (SCNT) has been envisioned as an approach for
generating patient-matched nuclear transfer (NT)-ESCs for studies of disease
mechanisms and for developing specific therapies. Past attempts to produce
human NT-ESCs have failed secondary to early embryonic arrest of SCNT e... 阅读全帖 |
|
m******g 发帖数: 467 | 47 Science 14.04.04
推荐:
1. Designer Chromosome
Total Synthesis of a Functional Designer Eukaryotic Chromosome
稍微了解一下:
1. Many individual stories for scientists
2. Designer Embryo
Construction of a Vertebrate Embryo from Two Opposing Morphogen Gradients
Nodal and BMP in Zebrafish
小知识:
1. Engineering Larger DNA Structures
Polyhedra Self-Assembled from DNA Tripods and Characterized with 3D DNA-
PAINT |
|
l*******i 发帖数: 153 | 48 我对这个STAP cell是半信半疑的。
半疑:如上面有人提出的,动物和人体内有很多组织器官是偏酸性的,为什么没有出现
癌变呢,如果这个STAP cell的理论是正确的话。
半信:STAP cell的totipotency。要知道,目前已有的ESC系,几乎都不具有
totipotency,即只能形成embryo,但不能形成胎盘等extra-embyonic tissue.但小保
方文章的最主要的“卖点”就是这个STAP cell具有totipotency.如果这个STAP cell不
存在的话,那么小保方他们是用什么细胞做了chimeras与四倍体补偿实验?只能是
blastocyst(inner cell mass)之前的细胞,比如2-cell,8-cell或morula embryo。
但是,这样一来,造假的过程就不仅仅是小保方一人可以完成的,必定还有做chimeras
与四倍体补偿实验的实验室。 |
|
l*******i 发帖数: 153 | 49 看图片,应该不像artifact,荧光强度与embryo相似。对照组(ESC)则只有embryo有
GFP。所以,就这个实验本身,是可信的。可能性只有两个:1)totipotent STAP cell
真的存在过;2)这个chimeras实验从最初都造假了,inject的不是STAP cell,也不是
STAP-derived cells,而是小鼠blastocyst之前的细胞。如果是第二种可能,说明造假
的不是小保方一人,而是至少两个实验室联合造假。那么,问题并非披露的那么简单,
这可能也是为什么RIKEN要重组发育生物学中心的原因。 |
|
f******t 发帖数: 2699 | 50
另一个有 off-target嫌疑的技术?没有证据表明,abp1-c1 是否影响到其它target,
尽管回交了一下;然后,他们也提到可能有紧密连锁的其它突变(off-target所致)无
法清掉,所以就筛了另一个(非Cas)突变abp1-TD1。乖乖,也没有表型,但是同样无
法证明abp1-TD1影响了其它基因。反正,两种可能都有:以前的结果被他们认为是off-
target造成,别人也可以说,你们现在的结果也没法排除这个可能性,那发出来干嘛?
等以后第三方再来“纠正”?就为了数文章数?本来,他们吧 abp1-c1 和abp1-TD1杂
交的F1 表型验证一下,对于排除可能的off-target也稍微更有说服力一些(如果这些
影响是隐性的)。
--验证负结果跟正结果不一样。至少他们证明了基因不表达(我对此存疑),但植物
没有表型。off target导致负负得正的机会有多大呢?他们至少做了abp1-c1跟WT回交
clear background。我赞同你的观点,他们确实应该做几个complement,abp1-c1Xabp1
-TD1是一个,另一是cross最早的那个embry... 阅读全帖 |
|