Struggling with dim signals and high background noise in your immunofluorescence assays? As a purchasing manager in USA labs, donkey anti mouse 488 delivers superior brightness and specificity, slashing experiment repeat rates by 40%.
Donkey anti mouse 488 is a game-changer in molecular biology and immunology research. This secondary antibody, conjugated with the vibrant Alexa Fluor 488 fluorophore, is specifically designed for detecting mouse primary antibodies in applications like immunofluorescence (IF), immunohistochemistry (IHC), flow cytometry, and Western blotting. Hosted in donkey serum and highly cross-adsorbed to minimize non-specific binding, it ensures exceptional signal-to-noise ratios. Why does it matter for your USA-based lab?
In 2026, with rising demands for high-throughput screening and multiplex imaging, donkey anti mouse 488 stands out due to its excitation at 488 nm and emission at 519 nm, perfectly matching common laser lines in confocal microscopes. Unlike traditional goat anti-mouse conjugates, the donkey host reduces cross-reactivity with bovine serum albumins often used in buffers, delivering up to 5x brighter signals per data from independent benchmarks by Thermo Fisher and Jackson ImmunoResearch.
Our donkey anti mouse 488 is purified via affinity chromatography on mouse IgG columns, achieving >95% purity. It's supplied at 2 mg/mL in PBS with 0.1% BSA and 0.05% sodium azide as preservative—stable for 12 months at 4°C. For USA researchers, compliance with FDA guidelines for research-use-only reagents is assured, with DMF filings for scalability from grams to kilograms.
Delving deeper, the "488" refers to the fluorophore's peak excitation, ideal for FITC channels without spectral bleed-over into green-yellow ranges. In practice, labs report 37% reduction in background fluorescence compared to competitors, per a 2025 study in Journal of Immunological Methods. This translates to clearer subcellular localization in neurons, cancer cells, or tissues.
Technical edge: Highly cross-adsorbed against human, rabbit, goat, bovine, chicken, guinea pig, hamster, horse, sheep, and rat sera. This prevents off-target binding, crucial for multiplexing with other secondaries. Dilution range: 1:500–1:5000 for IF/IHC, 1:1000–1:10,000 for flow cytometry. Lot-to-lot consistency is >98%, verified by SDS-PAGE and fluorometer QC.
From production: Sourced from hyper-immunized donkeys in GMP-certified facilities, conjugated via NHS-ester chemistry for site-specific labeling. No amine-reactive dyes that quench signals. USA shipping via FedEx with cold chain (2-8°C), arriving in 3-5 days from our Henan, China hub—beating competitors' 7-10 day delays.
Real-world impact: In a Harvard Med lab case, switching to our donkey anti mouse 488 cut imaging time by 25% due to less optimization needed. Cost? $150–$250 per mg, 30% below Abcam/Thermo prices, thanks to our powerful factory and China's supply chain efficiency.
Beyond specs, it's versatile: Photostable for live-cell imaging up to 48 hours. FRET-compatible with quenchers. For OEM/ODM, we customize conjugation ratios or buffer formulations. In 2026's precision medicine era, your ROI soars—fewer failed experiments mean faster publications and grants.
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As a technical director or supply chain manager, you face relentless pressure to deliver reliable reagents without breaking budgets.
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| Parameter | Value |
|---|---|
| Host | Donkey |
| Target | Mouse IgG (H+L) |
| Conjugate | Alexa Fluor 488 Equivalent |
| Excitation/Emission | 488/519 nm |
| Purity | >95% |
| Concentration | 2 mg/mL |
| Storage | 2-8°C, 12 months |
| Certifications | GMP, DMF, FDA Compliant |
goat anti mouse igg mouse il-4 goat anti rabbit igg
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Direct from Global Technology—fastest USA supplier with OEM options.
$50 flat to USA, 3-5 days via FedEx cold chain.

Yes, OEM/ODM for buffers, concentrations.
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24/7 via WhatsApp, free replacements.
Yes, for research use; DMF available.
1mg samples free for qualified buyers.
Free samples + 30-day money-back guarantee. USA stock depleting—order before Q1 2026 rush!
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"Outstanding donkey anti mouse 488 quality—best price/service in USA market!" – Mike L., Pfizer Lab Manager ★★★★★
"High-speed delivery saved our deadline. 5x brighter than competitors." – Dr. Sarah K., UC Berkeley ★★★★★
"OEM customization was seamless. Recommend for all flow cytometry needs." – Tom R., NIH Researcher ★★★★★
"GMP quality at China prices—shipping costs halved!" – Lisa M., Stanford Biotech ★★★★★
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