Anti-PSG1 Antibody

Polyclonal rabbit reagent raised against Pregnancy-Specific Beta-1-Glycoprotein 1 (PSG1), a secreted glycoprotein of the CEA family and immunoglobulin superfamily that is produced by placental syncytiotrophoblast during gestation and re-expressed in several epithelial carcinomas. Antibodies.com distributes the reagent at 1 mg/ml in PBS containing 0.1% sodium azide and 50% glycerol, supplied as a 100 µl vial.

Recommended applications include western blot (WB), immunohistochemistry (IHC), and immunofluorescence (IF) on human tissue. For long-term storage keep at -20 °C and aliquot upon receipt to minimize repeated freeze-thaw cycles; the 50% glycerol cryoprotectant permits short handling at lower temperatures without activity loss.

PSG1 supports research into trophoblast differentiation, placental barrier function, and pregnancy immunology, and has been investigated as a circulating biomarker in breast, lung, and gastrointestinal tumors where serum levels rise above the pregnancy baseline. The unconjugated format allows direct conjugation for custom assay development or use with HRP- and fluorophore-linked secondary reagents in standard imaging workflows.