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Invitrogen by Thermo Fisher Scientific Alexa Flour Secondary Antibodies 2017-09-15 14:19:04


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We offer 18 different individual Invitrogen™ Alexa Fluor™ dyes and 4 Alexa Fluor tandem dyes conjugated to secondary antibodies. Invitrogen Alexa Fluor protein and antibody conjugates produce fluorescence outputs that exceed those of other spectrally similar fluorophore conjugates.

As the creators of the Alexa Fluor dye technology, we have extensive experience in providing fluorescent secondary antibodies that exhibit superior brightness and photostability and outperform conventional fluorescent secondary antibodies. With more than 30,000 publications, Alexa Fluor dyes have been successfully used over the last two decades of fluorescence imaging.

 

Alexa Fluor secondary antibody selection table

 
 
 

Alexa Fluor secondary antibodies by host and target species

 

Alexa Fluor secondary antibodies are available with a variety of host and target specificities, including goat, chicken, donkey, guinea pig, hamster, human, mouse, rabbit, sheep, and rat. The most popular host species for secondary antibodies is goat, while the most popular target species are anti-mouse and anti-rabbit because most primary antibodies are produced in these animals. Knowing that antibodies of these host and target specificities are most common, we offer goat anti-mouse and goat anti-rabbit secondary antibodies conjugated to all of the Alexa Fluor dyes. We also offer Alexa Fluor conjugated secondary antibodies with other host and target species combinations.

 

 

Alexa Fluor secondary antibodies for imaging and western blotting

 

Alexa Fluor secondary antibodies can be used in a variety of cell analysis and protein analysis applications. The most popular applications are imaging and fluorescent western blotting.

 

Cell imaging allows scientists to see inside a cell and better understand and predict cell health and function. Cell imaging comes in different formats, including immunohistochemistry (IHC), immunocytochemistry (ICC), and immunofluorescence (IF). We have Alexa Fluor secondary antibodies that will work in each of these applications. For information about using secondary antibodies for immunolabeling, see our page on immunolabeling using secondary antibodies.

 
 

 
 

Muntjac skin cell labeled in three different colors using an Alexa Fluor secondary antibody. Golgi bodies in a muntjac skin cell were labeled with anti–golgin-97 monoclonal antibody (Cat. No. A-21270) and visualized with green-fluorescent Alexa Fluor™ 488 goat anti–mouse IgG1 antibody (Cat. No. A-21121). Filamentous actin was labeled with Alexa Fluor™ 680 phalloidin (Cat. No. A22286, pseudocolored purple). Nuclei were stained with blue-fluorescent DAPI (Cat. No. D1306, D3571, D21490).

Fluorescent western blotting is growing in popularity because of its time savings and multiplex detection capabilities compared to traditional western blotting methods. The wide range of Alexa Fluor secondary antibodies provides conjugates with non-overlapping spectra to enable multiplex analysis. Multiple targets can be detected independently in the same lane and blot with clear distinction between colors.

 
                                                     
 
    
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