FluoCells™ Prepared Slide #3 (mouse kidney section with Alexa Fluor™ 488 WGA, Alexa Fluor™ 568 Phalloidin, and DAPI) - FAQs

3 个常见问题解答

DAPI和Hoechst 染料非常相似，该如何选用？

DAPI是一种非常普通的蓝色核复染荧光染料，能对固定和通透的细胞和组织的细胞核进行非常明亮的标记。遗憾的是，人们普遍认为它是介于半通透性到非通透性之间的染色剂，对活细胞的染色效果也不一致。Hoechst 33342染料是细胞通透性染料，与DAPI染色有相似的染色结合机制和荧光颜色；它是活细胞成像的首选，且对固定细胞的标记效果和DAPI一样好。

Do you have any slides of pre-labeled cells or tissues that I can use to demonstrate with?

Some of the most popular are the FluoCells demonstration slides, which have cells or tissue sections that are labeled with three different dyes. FluoCells 1 and 2 have cultured cells, while FluoCells 3 is a tissue section (mouse kidney). Slides with fluorescent beads are also available.

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

DAPI and Hoechst dyes are quite similar to each other. Why would I choose one over the other?

DAPI is a very common blue-fluorescent dye for nuclear counterstaining and gives very bright labeling on nuclei in fixed and permeabilized cells and tissues. However, it is considered to be a semi-permeant to impermeant stain and provides inconsistent staining of live cells. Hoechst 33342 dye is cell-permeant and stains with the same binding mechanism and fluorescent color; it is preferred for live-cell imaging and is just as good as DAPI for fixed cell labeling.

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