DyLight 488 Goat Anti-Mouse IgG: Why This Green Channel Outperforms FITC and Cy2

The Green Channel Problem No One Talks About

For decades, FITC has been the default green fluorophore—but it comes with well-documented baggage: rapid photobleaching, pH sensitivity, and modest quantum yield. DyLight 488 changes the equation entirely.

Abbkine's DyLight 488 Goat Anti-Mouse IgG (A23210) is an affinity-purified polyclonal antibody targeting the whole molecule of mouse IgG. It is validated for FCM, ICC, and IF, with a recommended starting dilution range of 1:50–1:1000. With over 20 peer-reviewed publications citing its use, this antibody has earned its place as a trusted green-channel reagent.

Brightness: The Numbers Don't Lie

DyLight 488-antibody conjugates are brighter than Cy2 and FITC conjugates and comparable in brightness to Alexa Fluor 488 conjugates. This means you get strong signal without having to push antibody concentrations to levels that increase background.

Photostability: Built for Long Imaging Sessions

Photostability is not a luxury—it's a necessity for confocal microscopy, time-lapse imaging, and any experiment requiring prolonged excitation. DyLight 488 conjugates fade less than FITC and Cy2 conjugates in mounting media, indicating that the DyLight 488 molecule is inherently more photostable in epifluorescence microscopes.

pH Tolerance: Fluorescence from pH 4 to pH 9

Unlike FITC, which loses fluorescence in acidic environments, DyLight dyes remain highly fluorescent across a wide pH range—from pH 4 to pH 9. This is critical for fixed tissues, antigen retrieval protocols, and any sample with variable pH conditions.

Purity and Specificity: Affinity-Purified to >95%

A23210 is affinity-purified using solid-phase mouse IgG (H&L) with final purity >95% based on SDS-PAGE. The antibody reacts with whole molecule mouse IgG, heavy chains of mouse IgG, and light chains of all other mouse immunoglobulins, with no reactivity on non-immunoglobulin serum proteins.

Storage and Stability: One Year at -20°C

Formulated in liquid PBS (pH 7.4) with 0.02% sodium azide, 1% BSA, and 50% glycerol, A23210 is stable for one year at -20°C from the date of shipment. For maximum recovery, centrifuge the vial after thawing and aliquot to avoid repeated freeze-thaw cycles.

Head-to-Head: Green Channel Fluorophores

The Bottom Line

If your immunofluorescence, flow cytometry, or ICC workflow demands a green channel secondary antibody that delivers bright, photostable, and pH-resistant signal, A23210 is the clear choice.

📎 Reference: DyLight 488, Goat Anti-Mouse IgG (A23210)