小鼠酸性粒細(xì)胞趨化因子(eotaxin)ELISA試劑盒子科生物研發(fā)生產(chǎn),深圳子科生物ELISA試劑盒優(yōu)質(zhì)供應(yīng)商,擁有10年的研發(fā)和生產(chǎn)經(jīng)驗(yàn),擁有*的儀器設(shè)備,專業(yè)的技術(shù)人員和*的實(shí)驗(yàn)技術(shù),目前已經(jīng)建立強(qiáng)大的實(shí)驗(yàn)技術(shù)服務(wù)平臺(tái),品牌設(shè)立為:ZIKER 。
小鼠酸性粒細(xì)胞趨化因子(eotaxin)ELISA試劑盒●品牌:子科生物ZIKER,美國(guó)R&D,美國(guó)immonoway,美國(guó)sciencell,德國(guó)IBL
●產(chǎn)品說(shuō)明書(shū):可添加在線客服索要原版詳細(xì)操作說(shuō)明書(shū),或者留下您的,我們會(huì)將產(chǎn)品詳細(xì)說(shuō)明書(shū)發(fā)送至您的
●價(jià)格:電議,或咨詢?cè)诰€客服,或者以郵件形式發(fā)到我司zikerbio進(jìn)行詢價(jià),我們將在*時(shí)間回復(fù)您!深圳子科生物提供大量品牌進(jìn)口原裝,分裝,以及穩(wěn)定性強(qiáng)的國(guó)產(chǎn)ELISA試劑盒,性價(jià)比*。咨詢!
深圳子科生物所有ELISA試劑盒均需要經(jīng)過(guò)質(zhì)檢合格后才允許出庫(kù),能有效控制產(chǎn)品質(zhì)量,廣大客戶可以放心購(gòu)買(mǎi)。且子科生物所有ELISA試劑盒里的抗體均采用進(jìn)口品牌抗體,能有效保證產(chǎn)品的高效靈敏性,且我公司研發(fā)人員有豐富的研發(fā)經(jīng)驗(yàn),*的儀器設(shè)備,*的實(shí)驗(yàn)技術(shù),讓我公司產(chǎn)品優(yōu)于同等廠家系列產(chǎn)品,是您的*廠家。
ELISA試劑盒檢測(cè)方法:雙抗體夾心法、雙抗原夾心法、間接法測(cè)抗體、雙位點(diǎn)一步法、 競(jìng)爭(zhēng)法 、捕獲法、ABS-ELISA方法,我們子科生物主要采用雙抗體夾心法。詳細(xì)可以咨詢我們銷售人員。
小鼠酸性粒細(xì)胞趨化因子(eotaxin)ELISA試劑盒標(biāo)本的保存
一般說(shuō)來(lái),在 5 天內(nèi)測(cè)定的標(biāo)本可放置于 4℃,超過(guò)一周測(cè)定的需低溫凍存。 對(duì)收集后當(dāng)天進(jìn)行檢測(cè)的標(biāo)本,儲(chǔ)存在 4 ℃ 備用,如有特殊原因需要周期收集標(biāo)本, 將標(biāo)本及時(shí)分裝后放在 -20 ℃ 或 -70 ℃ 條件下保存。避免反復(fù)凍融。 標(biāo)本 2 -8 ℃ 可保存 48 小時(shí), -20 ℃ 可保存 1 個(gè)月。 -70 度可保存 6 個(gè)月。部分標(biāo) 本也可加入適當(dāng)防腐劑,激素類標(biāo)本需添加抑肽酶。
在它的研究、生產(chǎn)及使用中常常會(huì)碰到非特異性問(wèn)題,子科生物技術(shù)部根據(jù)多年研發(fā)和臨床經(jīng)驗(yàn)總結(jié)如下:
1、試劑盒特異性因素
1)固相載體的選擇。ELISA中常用的固相載體有微量滴定板、小珠和小試管三種,以微量滴定板zui為常見(jiàn)[1]。它具有良好的吸附性能,孔底透明度高,空白值低,各板之間、同一板各孔之間性能相近。聚苯乙烯ELISA板由于原料的不同和制作工藝的差別,各產(chǎn)品的質(zhì)量差異很大。因此,在選擇試劑盒同時(shí)要對(duì)其使用的微孔板型號(hào)進(jìn)行認(rèn)證,評(píng)估。
2)包被物的純度。在酶聯(lián)免疫測(cè)定尤其是間接ELISA中,試劑的特異性取決于使用抗原的純度。目前由于技術(shù)條件的限制,包被用抗原或抗體的純度不可能達(dá)到100%,所以有些非特異性顯色不可避免,只能盡可能提高純度,提高特異性。目前使用的包被抗原一般為合成多肽抗原。
3)包被抗體的效價(jià)。具有高親和力和高特異性的包被抗體,是決定試劑特異性的重要方面。
4 )封閉。是ELISA中重要的一步,目的是封閉固相載體表面尚未被所占據(jù)的空隙[2],減少后續(xù)步驟中非特異性蛋白的干擾。
2、操作過(guò)程中的問(wèn)題造成假陽(yáng)性
1)加樣
對(duì)于間接ELISA標(biāo)本一般都要進(jìn)行稀釋,如果加樣不準(zhǔn)就會(huì)造成誤差,尤其當(dāng)稀釋倍數(shù)大時(shí),很小的誤差,會(huì)導(dǎo)致較大的相對(duì)誤差,使陰性(或弱陽(yáng)性)標(biāo)本呈陽(yáng)性(或陰性)。加樣時(shí)應(yīng)將所加物加在ELISA板孔的底部,避免加在孔壁上部,并注意不可濺出,不可產(chǎn)生氣泡。目前,大部分血站都已使用全自動(dòng)酶免加樣系統(tǒng)處理標(biāo)本,可較好地避免以上誤差。
2)洗滌
在ELISA中正確的洗滌是保證得到可重復(fù)結(jié)果的關(guān)健一步,應(yīng)引起操作者重視。無(wú)論是手工操作還是機(jī)器操作,得出不正確的結(jié)果常與不正確的洗滌有關(guān),ELISA就是靠洗滌來(lái)達(dá)到分離游離和結(jié)合的酶標(biāo)記物的目的。通過(guò)洗滌以消除殘留在板孔中沒(méi)能與固體抗原或抗體結(jié)合的物質(zhì),以及在反應(yīng)過(guò)程中非特異性吸附于固相載體的干擾物質(zhì)。
3) 溫育
每種試劑都有其佳反應(yīng)模式,其中溫度和溫育時(shí)間控制是重要因素。因孵育溫度高,反應(yīng)時(shí)間長(zhǎng),會(huì)造成整板本底高,陽(yáng)性率高。溫育一般用濕盒或水浴,反應(yīng)板不宜疊放,以保證各板溫度都能迅速平衡,為避免蒸發(fā),板上應(yīng)加蓋。
4)酶標(biāo)儀判讀
作為記錄測(cè)定結(jié)果的儀器,酶標(biāo)儀的性能穩(wěn)定與否,決定結(jié)果的可靠度。首先酶標(biāo)儀應(yīng)定期進(jìn)行保養(yǎng),對(duì)濾光片要定期校正;其次酶標(biāo)儀波長(zhǎng)設(shè)置要正確,使用雙波長(zhǎng),一個(gè)檢測(cè)波長(zhǎng),一個(gè)參比波長(zhǎng),以消除微孔板底部劃痕、不平、指印或液面高度差異造成的光干擾。此外,在用酶標(biāo)儀讀數(shù)時(shí)先擦試微孔板底部并壓平板條。由于各種酶標(biāo)儀性能有所不同。
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