Molecular Probes' proprietary Pro-Q Emerald 300 and Pro-Q Emerald 488 Glycoprotein Stain Kits provide the most advanced technology available for detection of glycoproteins in gels and on blots. Gel staining is rapid and very sensitive. In less than three hours, it is possible to detect as little as 300 pg of glycoprotein per band, depending on the degree of glycosylation, making these stains at least 50-fold more sensitive than standard fuchsin staining.