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iFluor® 555 PSA™ Imaging Kit with Goat Anti-Mouse IgG
Power Styramide™ Signal Amplification (PSA™) system is one of the most sensitive methods that can detect extremely low-abundance targets in cells and tissues with improved fluorescence signal 10-50 times higher than the widely used tyramide (TSA) reagents. In combination with our superior iFluor® dyes that have higher florescence intensity, increased photostability and enhanced water solubility, the iFluor® dye-labeled Styramide™ conjugates can generate fluorescence signal with significantly higher precision and sensitivity (more than 100 times) than standard ICC/IF/IHC. PSA utilizes the catalytic activity of horseradish peroxidase (HRP) for covalent deposition of fluorophores in situ. PSA radicals have much higher reactivity than tyramide radicals, making the PSA system much faster, more robust and sensitive than the traditional TSA reagents. Compared to tyramide reagents, the Styramide™ conjugates have ability to label the target at higher efficiency and thus generate significantly higher fluorescence signal. Styramide™ conjugates also allow significantly less consumption of primary antibody compared to standard directly conjugate method or tyramide amplification with the same level of sensitivity. iFluor® 555 PSA kit is a much superior replacement for Alexa Fluor 555 tyramide-based kit or other spectrally similar fluorescent tyramide or TSA kits.
Fluorescence IHC for HER2/ErbB2 detection in formaldehyde-fixed paraffin-embedded breast cancer tissue. Human Her2/Neu (c-erbB-2) positive tissue sections were incubated with Rabbit mAb HER2/ErbB2 diluted 1:5000 (Top) or 1:250 (Bottom), respectively. The tissue was then incubated with HRP-labeled Goat anti-Rabbit IgG secondary antibody followed by iFluor® 555 Styramide™ (Top) or Alexa Fluor® 555 tyramide (Bottom), respectively. Compared to tyramide amplification, the increase in sensitivity of Styramide™ super signal amplification allows the use of fewer primary antibodies. The same level of sensitivity can be achieved with a significant reduction in the amount of target antibody used (10-50 fold). The cell nucleus was costained with DAPI (Cat No. 17507).
Fluorescence IHC for HER2/ErbB2 detection in formaldehyde-fixed paraffin-embedded breast cancer tissue. Human Her2/Neu (c-erbB-2) positive tissue sections were incubated with Rabbit mAb HER2/ErbB2 diluted 1:5000 (Top) or 1:250 (Bottom), respectively. The tissue was then incubated with HRP-labeled Goat anti-Rabbit IgG secondary antibody followed by iFluor® 555 Styramide™ (Top) or Alexa Fluor® 555 tyramide (Bottom), respectively. Compared to tyramide amplification, the increase in sensitivity of Styramide™ super signal amplification allows the use of fewer primary antibodies. The same level of sensitivity can be achieved with a significant reduction in the amount of target antibody used (10-50 fold). The cell nucleus was costained with DAPI (Cat No. 17507).
protocol
Protocol
sds
SDS
COA
CatalogSize
Price
Quantity
45270100 Tests
Price
 
Spectral properties
Correction factor (260 nm)0.23
Correction factor (280 nm)0.14
Extinction coefficient (cm -1 M -1)
100000
1
Excitation (nm)557
Emission (nm)570
Quantum yield
0.64
1
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
UNSPSC12352200
Instrument settings
Fluorescence microscope
ExcitationCy3/TRITC filter set
EmissionCy3/TRITC filter set
Recommended plateBlack wall/clear bottom
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Page updated on September 20, 2025