EBSS, no calcium, no magnesium, no phenol red - FAQs

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6 product FAQs found

我知道有些培养基进行荧光成像的效果不佳，该如何选择培养基呢?

大多数培养基都含有酚红，会淬灭可见光波长范围的荧光染料。大多数培养基还含有自发荧光成分——如核黄素——会降低信噪比。我们提供的FluoroBrite DMEM和基于HEPES的活细胞成像溶液已针对荧光成像应用进行了优化。此外，我们还提供多种不含酚红的培养基。但是，如果这些产品都不是您的试验的合理选择，为此我们还提供BackDrop 背景抑制剂 ReadyProbes 试剂，将其加入可淬灭培养基的自发荧光。

使用荧光染料标记活细胞时，我是否需要考虑培养基中酚红的影响？

一些类型的细胞会积聚酚红，阻碍使用荧光探针。酚红会淬灭可见光波长范围内的染料。此外，尽管酚红本身并不发荧光，但其中的各种杂质可能会发出荧光。我们有许多不含酚红的培养基可供选择。我们的活细胞成像溶液（基于HEPES）和FluoroBrite DMEM已经过优化，不含酚红且无自发荧光。

你们是否提供不含酚红的培养基（无酚红培养基）？

是的，请访问此页面(https://tools.thermofisher.com/content/sfs/brochures/Phenol_RedFree_Media_Glance.pdf)浏览我们的无酚红培养基页面。

I understand that some media are worse than others for fluorescence imaging. How do I choose?

Most media contain phenol red, which can quench fluorescent dyes in the visible wavelengths. Most media also contain autofluorescent components, such as riboflavin, which can reduce signal-to-background. We offer FluoroBrite DMEM and HEPES-based Live Cell Imaging Solution, which have been optimized for fluorescent imaging. We also offer a number of media without phenol red. But if none of these are reasonable options for your experiment, then we also offer BackDrop Background Suppressor ReadyProbes Reagent, which can be added to quench media autofluorescence.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

Should I be concerned about phenol red in my media when labeling my live cells with fluorescent dyes?

Some cell types accumulate phenol red, and this can pose a problem in the use of many fluorescent probes. Phenol red can quench visible-wavelength dyes and, although phenol red is non-fluorescent, various impurities may be fluorescent. We have many phenol red-free media to choose from. Our Live Cell Imaging Solution (HEPES-based) and our FluoroBrite DMEM have been optimized to be phenol red-free as well as to be non-autofluorescent.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

Do you offer media without phenol red (phenol red-free media)?

Yes, please visit this page for a list of our phenol red-free media (http://tools.thermofisher.com/content/sfs/brochures/Phenol_RedFree_Media_Glance.pdf).

Find additional tips, troubleshooting help, and resources within our Cell Culture Support Center.