97精品国自产拍在线观看_美日韩中文字幕_狠狠色丁香婷婷综合影院_h片欧美精品一区二区_一级毛片破过处的美女_亚洲AV有幕在线天堂动漫_无码专区白嫩少妇高潮喷水久久_皮特影院在线观看_热九九这里只有精品_亚洲综合网天天x

產(chǎn)品中心 Products
最新新聞 / News More
1
2018 - 06 - 22
對(duì)創(chuàng)傷經(jīng)歷的回憶會(huì)導(dǎo)致精神健康問題,如創(chuàng)傷后應(yīng)激障礙(PTSD),這會(huì)破壞一個(gè)人的生活。據(jù)估計(jì),當(dāng)前將近三分之一的人會(huì)在他們生命中的某個(gè)時(shí)刻遭受恐懼或應(yīng)激相關(guān)的障礙。如今,一項(xiàng)新的研究在細(xì)胞水平展示了一種療法如何能夠治療長期的創(chuàng)傷記憶。相關(guān)研究結(jié)果發(fā)表在2018年6月15日的Science期刊上,論文標(biāo)題為“Reactivation of recall-induced neurons contributes to remote fear memory attenuation”。論文通信作者、瑞士洛桑聯(lián)邦理工學(xué)院(EPFL)教授Johannes Gräff說,“我們的研究結(jié)果首次揭示了讓成功治療創(chuàng)傷記憶變得可能的過程?!?#160;在治療創(chuàng)傷記憶領(lǐng)域,對(duì)恐懼衰減(fear attenuation)是否涉及通過新的安全記憶痕跡(memory trace of safety)或?qū)⒃嫉目謶钟洃浐圹E(memory trace of fear)重寫為安全記憶痕跡來抑制原始的恐懼記憶痕跡,人們長期以來爭論不止。圖片來自EPFL / Gräff Group。這種爭論的一部分與我們總體上還不能完全理解神經(jīng)元如何存儲(chǔ)記憶的事實(shí)相關(guān)。雖然這項(xiàng)研究取得的新發(fā)現(xiàn)不能排除這種抑制機(jī)制,但是它們首次證實(shí)了重寫創(chuàng)傷記憶在治療創(chuàng)傷記憶中的重要性。這個(gè)領(lǐng)域的研究重點(diǎn)在于理解大腦減少創(chuàng)傷記憶的能力...
2
2019 - 04 - 12
4 月 9 日,美國紐約市市長比爾 · 德 · 布拉西奧宣布,該市布魯克林區(qū)的威廉斯堡進(jìn)入緊急狀態(tài),讓當(dāng)?shù)孛癖娨粫r(shí)風(fēng)聲鶴唳。是什么導(dǎo)致政府宣布這一近年罕見的公共衛(wèi)生緊急情況?答案你或許想不到,肇事者居然是為我們熟知的一種疾病——麻疹。卷土重來,美多地暴發(fā)麻疹疫情麻疹傳染性極強(qiáng),多見于兒童。我國在 1965 年后進(jìn)行針對(duì)性疫苗接種的推廣,這種疾病發(fā)病率逐漸減少。在美國,本已消失的麻疹病例在近些年時(shí)有出現(xiàn),今年在個(gè)別地區(qū)更是呈大暴發(fā)之勢(shì)。美國疾病控制中心(CDC)數(shù)據(jù)顯示,截至 4 月 4 日,美國 19 個(gè)州統(tǒng)計(jì)共出現(xiàn) 465 個(gè)麻疹病例,成為 2000 年以來疫情第二嚴(yán)重年份(2014 年全美病例達(dá) 667 例)。而紐約的布魯克林則成為重災(zāi)區(qū),僅威廉斯堡這一社區(qū)從去年 10 月至今年 4 月 8 日就有 228 例確診病例。除紐約市外,紐約州、新澤西州、華盛頓州、密歇根州以及加州等多個(gè)地區(qū)出現(xiàn)了 3 例以上的麻疹病例。而 CDC 將一地區(qū)出現(xiàn) 3 例以上麻疹病例定義為疫情暴發(fā)。一時(shí)間,麻疹疫情成為美國公共衛(wèi)生領(lǐng)域最受關(guān)注的話題。推波助瀾,“反疫苗運(yùn)動(dòng)” 難辭其咎CDC 認(rèn)為,美國的麻疹疫情與從以色列、烏克蘭和菲律賓等國來美旅客有關(guān),這些國家正在暴發(fā)大規(guī)模麻疹疫情。而對(duì)于紐約市布魯克林區(qū)來說,麻疹疫情的暴發(fā)則要?dú)w咎于人們的錯(cuò)誤認(rèn)知。一場(chǎng)愈演愈烈的 “反疫苗運(yùn)動(dòng)”,...
3
2019 - 08 - 23
2019年8月23日訊 /生物谷BIOON /——2019年6月,歐洲大部分地區(qū)遭遇了早期熱浪,法國的氣溫達(dá)到了創(chuàng)紀(jì)錄的46攝氏度(115華氏度)。熱浪的特點(diǎn)是在幾天幾夜持續(xù)高溫。它們對(duì)我們的日常生活有重要的影響--我們感到過熱和疲勞。當(dāng)熱浪來襲時(shí),許多政府會(huì)啟動(dòng)一項(xiàng)'熱行動(dòng)計(jì)劃',建議受影響的人多喝水,避免劇烈運(yùn)動(dòng),保持涼爽。如果不這樣做,就有中暑的風(fēng)險(xiǎn),而中暑有可能危及生命。但是,人體究竟是如何應(yīng)對(duì)如此極端的溫度的呢?為什么高溫如此危險(xiǎn)呢?哪些器官受到影響,什么時(shí)候情況會(huì)變得更糟?圖片來源:http://cn.bing.com保持涼爽人體的核心溫度通常在36到38攝氏度之間波動(dòng)(97到99華氏度)。在這個(gè)溫度范圍內(nèi),生化反應(yīng)可以正常進(jìn)行,這對(duì)細(xì)胞和器官的正常功能至關(guān)重要。人類的身體也能很好地應(yīng)對(duì)各種可能威脅其核心溫度的環(huán)境條件。當(dāng)核心溫度偏離正常范圍時(shí),身體就會(huì)啟動(dòng)生理反應(yīng),使溫度恢復(fù)正常。這種溫度調(diào)節(jié)反應(yīng)相當(dāng)于你家的恒溫器;一旦內(nèi)部溫度偏離理想溫度,加熱或冷卻系統(tǒng)就會(huì)被激活,回到理想溫度。在人體中,這個(gè)恒溫器位于我們大腦的底部,一個(gè)叫做下丘腦的區(qū)域。位于我們皮膚、肌肉和其他器官的溫度傳感器提供的信息被分析,必要時(shí),啟動(dòng)生理反應(yīng)。對(duì)溫度升高的第一個(gè)也是最重要的反應(yīng)是通過我們身體的皮膚和四肢,如手和腳散熱。我們開始產(chǎn)生汗液,汗液會(huì)在皮膚上蒸發(fā),在這個(gè)過程中散熱。這...
聯(lián)系我們
北京照生行儀器設(shè)備有限公司
銷售熱線:010-62929079
公司總機(jī):010-62929079
圖文傳真:010-62929277
總部地址:北京市海淀區(qū)西二旗西路熱力公司院內(nèi)泰禾文化園二層
產(chǎn)品名稱:

CellTrace? CFSE Cell Proliferation Kit, for flow cytometry

上市日期: 2019-04-17
產(chǎn)品類別: INVITROGEN

規(guī)格

Flow Cytometer Laser Lines:488
For Use With (Equipment):Flow Cytometer
Detection Method:Fluorescent
Format:Tube(s)
Excitation?Emission (nm):492?517
Form:Solid
Label or Dye:CellTrace? CFSE
Number of Reactions:20 Reactions
Product Line:CellTrace?
Product Size:1 kit
Shipping Condition:Room Temperature


  • 產(chǎn)品描述
  • 產(chǎn)品功能
  • 產(chǎn)品參數(shù)

描述

CellTrace? CFSE Cell Proliferation Kit is used for in vitro and in vivo labeling of cells to trace multiple generations using dye dilution by flow cytometry.

? Superior performance—bright, single-peak staining enables visualization of multiple generations
? Long-term signal stability—well-retained in cells for several days post stain
? Non-toxic—staining does not adversely effect cell health
? Simple, robust staining protocol

View a?selection guide for all CellTrace? Cell Proliferation Kits for flow cytometry.

Superior fluorescent staining
Successful proliferation analysis by dye dilution (see figure below) requires an extremely bright dye to distinguish fluorescently labeled cells from auto-fluorescence after several cell divisions. The intense fluorescent staining provided by CellTrace? CFSE dye enables the visualization of eight or more generations of proliferating cells before the signal is overwhelmed by intrinsic cellular auto-fluorescence. Consistent, homogeneous staining results in very little fluorescence variation between cells in a population, so distinct generations can be seen without any requirement for complex modeling software.

Long-term signal retention
Unlike stains that label the lipid membrane of cells, CellTrace? CFSE dye easily crosses the plasma membrane and covalently binds inside cells where the stable, well-retained fluorescent dye is designed to provide a consistent signal, even after several days in a cell culture environment.

Non-toxic
CellTrace? CFSE dye binds covalently to all free amines on the surface and inside of cells and shows little cytotoxicity, with minimal observed effect on the proliferative ability or biology of cells. Researchers have used CFSE SE labeling to show that transplantable hematopoietic cells proliferate in vitro in response to stimulation by a growth factor cocktail.

Simple, robust staining protocol
The CellTrace? CFSE Cell Proliferation Kit contains convenient single-use vials of dry dye to permit small-scale experiments without preparing excess quantities of dye. A stock solution is prepared by dissolving the contents of a vial in anhydrous DMSO prior to use. To stain 1 mL of cells in protein-free medium, 1 μL of this stock solution is typically used. Cells should be stained for 20 minutes at room temperature with gentle agitation. A brief wash with complete medium will then quench any dye remaining in solution.
For Research Use Only. Not for use in diagnostic procedures.

規(guī)格

Flow Cytometer Laser Lines:488
For Use With (Equipment):Flow Cytometer
Detection Method:Fluorescent
Format:Tube(s)
Excitation?Emission (nm):492?517
Form:Solid
Label or Dye:CellTrace? CFSE
Number of Reactions:20 Reactions
Product Line:CellTrace?
Product Size:1 kit
Shipping Condition:Room Temperature

內(nèi)容及儲(chǔ)存

Contains 1 vial of CellTrace CFSE (lyophilized powder) and 1 vial of DMSO.

Store in freezer (-5 to -30°C) and protect from light.


規(guī)格

Flow Cytometer Laser Lines:488
For Use With (Equipment):Flow Cytometer
Detection Method:Fluorescent
Format:Tube(s)
Excitation?Emission (nm):492?517
Form:Solid
Label or Dye:CellTrace? CFSE
Number of Reactions:20 Reactions
Product Line:CellTrace?
Product Size:1 kit
Shipping Condition:Room Temperature


規(guī)格

Flow Cytometer Laser Lines:488
For Use With (Equipment):Flow Cytometer
Detection Method:Fluorescent
Format:Tube(s)
Excitation?Emission (nm):492?517
Form:Solid
Label or Dye:CellTrace? CFSE
Number of Reactions:20 Reactions
Product Line:CellTrace?
Product Size:1 kit
Shipping Condition:Room Temperature


推薦新聞
地址:中國·上海·浦東區(qū)-浦東新區(qū)康橋路787號(hào)5號(hào)樓159室
電話:021-64396663
Copyright@ 2015-2016 北京照生行儀器設(shè)備有限公司
傳真:+86 0755-2788 8009
郵編:330520