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Cell Signaling Technology (CST) provides antibodies that have undergone rigorous validation by our in-house immunofluorescence (IF) group – our goal is to provide our customers with specific antibodies that yield the brightest signal and lowest possible background. We aim to provide customers with images clearly demonstrating correct localization and outstanding performance for all IF-validated antibodies. CST also offers Alexa Fluor® conjugated antibodies that are optimized for IF analyses. CST IF-validated antibodies are powerful tools that can be used to determine the activation status of proteins and characterize signaling pathways relevant to cancer and other diseases. All IF-validated antibodies are appropriate for high content screening and some IF-validated antibodies can also be used for *In-Cell Western™.

If you have any questions, please contact our Technical Support team.

Our rigorous validation protocols help us provide specific and reliable antibodies, which helps you get reproducible and meaningful data every time.


Confocal immunofluorescent analysis of HeLa cells using LAMP1 (D2D11) XP® Rabbit mAb #9091 (green). Actin filaments were labeled with DY-554 phalloidin #13054 (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).


Confocal immunofluorescent analysis of HeLa cells using PCNA (D3H8P) XP® Rabbit mAb #13110 (green) and β-Actin (8H10D10) Mouse mAb #3700 (red).

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