Cyan Fluorescent ProteinCyan Fluorescent Protein (CFP) is a versatile biological marker for monitoring physiological processes, visualizing protein localization, and detecting transgenic expression in vivo. CFP can be excited by the 405 nm laser line and is optimally detected at 485 nm.

We offer a series of Invitrogen RFP CellLight fusion constructs of signal peptides or cell structure proteins with CFP for accurate and specific targeting to subcellular structures, including the nucleus and plasma membrane.

CellLight reagents offer high spatial and temporal resolution for live-cell applications and tolerate fixation with formaldehyde for fixed-cell analysis. Green Fluorescent Protein, Red Fluorescent Protein, and Cyan Fluorescent Protein constructs are available for multiplexing with cellular stains and other CellLight reagents.

Cyan Fluorescent Protein (CFP) dashboard

Initial brightness

Cyan Fluorescent Protein is a useful expression label in the blue channel for flow cytometry or imaging applications; the signal is unchanged in antifade reagent or buffer.  

Photostability in buffer


Photostability in antifade


  350, 405 DAPI 435 485  
Laser line

Common filter set

Excitation max

Emission max

CFP products

CellLight reagents

CellLight reagents are ready-to-use fluorescent protein constructs targeted to specific subcellular structures. These reagents provide a simple and effective method for introducing targeted intracellular labels within living cells. Simply add the reagent to your cells, incubate overnight, and you’re ready to image your cells.

Learn more about CellLight reagents


Live cell imaging with CellLight reagents. HEK-293 cells transduced with CellLight Plasma Membrane-CFP and CellLight Peroxisome-GFP. The following day, live-cell imaging was performed using a 60x objective on a DeltaVision Core microscope and standard DAPI/FITC/TRITC filter sets.

BacMam Technology

  • Efficient transduction of cell lines, including primary cells and stem cells
  • Safe transduction and lack of observable cytopathic effects
  • Easy modulation of gene expression
  • Expression of multi-component complexes at the right stoichiometry

The Invitrogen BacMam technology is based on double-stranded DNA insect viruses (baculovirus) as vehicles to efficiently deliver and express genes in mammalian cells, including those encoding fluorescent proteins. such as Cyan Fluorescent Protein. Baculoviruses are well-tolerated and nonreplicating in mammalian cells, so they have an excellent safety profile for routine applications.

Learn more about:

Live-cell imaging of HeLa cells

Live-cell imaging of HeLa cells using CellLight mitochondria and talin probes, transduced using BacMam 2.0 technology.


Molecular Probes Handbook

Cell stain tool

The significantly revised 11th Edition is the most complete fluorescence labeling and detection reference available. The Molecular Probes Handbook can help you achieve the best experimental results for your fluorescence labeling and detection experiments. View the handbook online or order your own copy.

Go to the Handbook online
Order your copy of the Handbook

Antifade reagents

Cell stain tool

Antifade reagents suppress photobleaching and preserve the signals of your fluorescently labeled target molecules. They offer excellent compatibility with a multitude of dyes across the spectrum, making them especially valuable tools for multicolor applications. For added convenience, some formulations include the nuclear counterstain DAPI, eliminating the need for a separate counterstaining step.

Learn more about SlowFade Antifade reagents
Learn more about ProLong Antifade reagents

Cell stain tool

Cell stain tool

Stain your own cell by using our simulation tool to develop reproducible results with many of our signature fluorescent dyes. Develop your multiplexing strategy for antibody probes, reactive dyes, and counterstains to create your perfectly labeled fluorescent cell.

Go to the cell stain tool

Fluorescence SpectraViewer


Plot and compare spectra and check the spectral compatibility for common fluorophores including all of the fluorescent probes from Thermo Fisher Scientific. The Fluorescence SpectraViewer tool is formatted for both microscope imaging and flow cytometry applications.

Go to the Fluorescence SpectraViewer

Not for resale. Super Bright Polymer Dyes are sold under license from Becton, Dickinson and Company.