Description
The DM3160 FluoroBand™ 1KB (0.25-10 kb) Fluorescent DNA Ladder is a ready-to-use DNA ladder, which is pre-mixed with high sensitivity DNA binding fluorescent dye and loading dye for direct gel loading. The DNA ladder DM3160 is composed of 13 individual DNA fragments: 10k, 8k, 6k, 5k, 4k, 3k, 2.5k, 2k, 1.5k, 1k, 750, 500, and 250 bp derived from a mixture of PCR products and specifically digested plasmid DNA; these bands can be visualized when illuminated with 470 nm blue light or UV light. This product contains two enhanced bands (3 kb and 1 kb) for easier reference. In addition, two tracking dyes, Xylene cyanol FF and Bromophenol blue which mimic the migration of 4,000 bp and 500 bp dsDNA during electrophoresis are also added for real time monitoring. Real time observation of the electrophoresis is also possible if compatible light source is fitted to the electrophoresis tank.
Features
Sharp bands
Quick reference— enhanced bands
Ready-to-use— premixed with loading dye for direct loading
Stable— room temperature storage over 6 months
Directly observed by UV or blue light— premixed with high sensitive DNA fluorescent dye
Source
Phenol extracted PCR products and dsDNA digested with specific restriction enzymes, equilibrated in 10 mM Tris-HCl (pH 8.0) and 10 mM EDTA.
Range
250 ~ 10,000 bp
Concentration
50 µg/ 500 µl
Recommended loading volume
5 µl/ well
Storage
Protected from light Room temperature for 6 months4°C for 12 months -20°C for 24 months
Specification
Cat. No. | DM3160 |
Series Name | FluoroBand™ |
Product Size | 500 μl |
Size Range | 250 – 10000 bp |
Band Number | 13 |
Tracking Dye | Bromophenol blue and Xylene cyanol FF |
Enhanced Band | 1000 and 3000 bp |
Manual
Manual_DM3160_FluoroBand™ 1 KB (0.25-10 kb) Fluorescent DNA Ladder
SDS
SDS_DM3160
Are the DNA markers/ladders produced by SMOBIO sufficient in quantity?
Yes, all the DNA markers of SMOBIO have been passed in the QC processes including repeated optical density measurements to ensure the quantity of total DNA.
Can I combine non-fluorescent markers and fluorescent loading dye (ex. DL5000) to replace FluoroBand™ fluorescent DNA ladders?
SMOBIO’s fluorescent DNA ladders is better in intensity and accuracy than a fluorescent marker produced by mixing non-fluorescent one with reagents containing fluorescent DNA dyes such as DL5000. In another aspect, DL5000 is designed for quick screening, not intended for preparation of DNA ladders which needs careful calibration. Therefore we suggest using our fluorescent DNA ladders directly.
Will FluoroBand™ fluorescent DNA ladders gradually lose fluorescent intensity?
The fluorescent signals of a fluorescent DNA ladder might be reduced if frequently exposed to light for a long term. Therefore, we suggest keeping fluorescent DNA ladders from exposure to light.
Can fluorescent DNA markers be visualized when illuminated with UV light?
Yes, it is possible to view the fluorescent signals under blue light and UV light.
The conserved basic residues and the charged amino acid residues at the α-helix of the zinc finger motif regulate the nuclear transport activity of triple C2H2 zinc finger proteins
Chih-Ying Lin, Lih-Yuan Lin PLoS One. 2018; 13(1): e0191971. Published online 2018 Jan 30. doi: 10.1371/journal.pone.0191971
PMCID: PMC5790263
Transposable elements generate population-specific insertional patterns and allelic variation in genes of wild emmer wheat (Triticum turgidum ssp. dicoccoides)
Katherine Domb, Danielle Keidar, Beery Yaakov, Vadim Khasdan, Khalil Kashkush BMC Plant Biol. 2017; 17: 175. Published online 2017 Oct 27. doi: 10.1186/s12870-017-1134-z
PMCID: PMC5659041
FluoroBand™ DNA Ladder series
ExcelBand™ DNA Ladder series
FluoroDye™ DNA Fluorescent Loading Dye
Excellent for premix with DNA sample
Sensitivity up to 0.14 ng DNA
Safety dye
Convenience - monitor the electrophoresis in real-time
FluoroVue™ Nucleic Acid Gel Stain
Excellent for in-gel staining
Sensitivity up to 0.14 ng DNA or 1 ng total RNA
A safer alternative to EtBr
Suitable to blue or UV light
B-BOX™ Blue Light LED Epi-illuminator
470 nm long wavelength
Improved cloning efficiency
Compact, light-weight, and portable (less than 1 kg)
Adjustable and removable filter plate allows for gel cutting, visualization, and documentation
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这些常用免疫组织化学方法的原理如下:
1. 免疫荧光细胞化学技术
将已知抗体标上荧光素,以此作为探针检查细胞或组织内的相应抗原,在荧光显微镜下观察.当抗原抗体复合物中的荧光素受激发光的照射后会发出一定波长的荧光,从而可以确定组织中的抗原定位或定量.
2. 免疫酶细胞化学技术
是目前免疫组织化学研究中最常用的技术.基本原理是先以酶标记的抗体与组织或细胞作用,然后加入酶的底物,生成有色的不溶性产物或具有一定电子密度的颗粒,通过光镜或电镜,对细胞或组织内的相应抗原进行定位或定性研究.
3. 免疫胶体金技术
就是用胶体金标记一抗,二抗或其他的能特异性的结合免疫球蛋白的分子(如葡萄球菌A蛋白)等作为探针对组织或细胞内的抗原进行定性,定位或定量研究.由于胶体金的电子密度高,多用于免疫电镜的单标记或多标记的定位研究.向左转|向右转
意见建议:
1. 免疫荧光细胞化学技术把已知抗体标上荧光素,以此作为探针检查细胞或组织内的相应抗原,在荧光显微镜下观察.当抗原抗体复合物中的荧光素受激发光的照射后会发出一定波长的荧光,从而可以确定组织中的抗原定位或定量。2. 免疫酶细胞化学技术是目前免疫组织化学研究中最常用的技术.基本原理是先以酶标记的抗体与组织或细胞作用,然后加入酶的底物,生成有色的不溶性产物或具有一定电子密度的颗粒,通过光镜或电镜,对细胞或组织内的相应抗原进行定位或定性研究。3.免疫胶体金技术就是用胶体金标记一抗,二抗或其他的能特异性的结合免疫球蛋白的分子(如葡萄球菌A蛋白)等作为探针对组织或细胞内的抗原进行定性,定位或定量研究.由于胶体金的电子密度高,多用于免疫电镜的单标记或多标记的定位研究。
荧光素是具有光致荧光特性的染料,荧光染料种类很多。目前常用于标记抗体的荧光素有以下几种:异硫氰酸荧光素,四乙基罗丹明,四甲基异硫氰酸罗丹明,酶作用后产生荧光的物质。
此法适用于小量抗体的荧光素标记,标记简便,非特异性染色较少。
(1)试剂和材料 试剂和材料同改良法。
(2)方法及步骤
①用0.025mol/L碳酸盐缓冲液pH9.0,将欲标记免疫球蛋白稀释成1%浓度,装入透析袋中。
②用同一缓冲液将FITC配成0.1mg/ml的溶液,按10mg/ml球蛋白溶液体积的10倍,将FITC稀释液盛于圆柱形容器内,并使透析袋浸没于FITC液中。
③容器顶端盖紧,底部放搅拌棒,在4~C电磁搅拌下透析标记24h。取出透析袋中标记液,即刻用SephadexG50凝胶过滤,去除游离荧光素,分装,贮存于4℃中。
SPSS软件统计结管归析其析都看SIGSIG=significance意显著性面值统计P值P值0.01<P<0.05,则差异显著P<0.01,则差异极显著
F值差检验量整模型整体检验看拟合程没意义
t值每自变量(logistic归)逐检验看beta值β即归系数没意义
T数值表示归参数显著性检验值绝值于等于ta/2(n-k)(值表示根据置信水平自由度数值)拒绝原假设即认其解释变量变情况解释变量X解释变量Y影响显著
F值归程显著性检验表示模型解释变量与所解释变量间线性关系总体否显著做推断若F>Fa(k-1,n-k),则拒绝原假设即认列入模型各解释变量联合起解释变量显著影响反则显著影响
CD133抗原为5次跨膜( 5_transmembrane, 5_TM )糖蛋白。
CD133抗原可被3种CD133抗体识别:克隆AC133、293C3和AC141。AC133直接与CD133/1糖基化抗原表位结合,可用于从外周血、骨髓、脐带血及其它组织中分析和分选CD133+细胞。
多数情况下CD133/1和CD133/2识别同种细胞,只是有表达强度的差别,但是在骨髓增生异常综合征(myelodysplastic syndrome,MDS)和某些急性髓性白血病中发现CD133/1和CD133/2表达不同,或者正常表达强度紊乱。