Chorionic Gonadotropin, Human, beta (hCGb)

Size

£576.00

SKU:: C5069-86
Molecular Weight:: 22
Purity:: ≥95% by SDS-PAGE
Storage Conditions:: -20°C
Supplier:: United States Biological
Format:: Supplied as a lyophilized powder from 50mM ammonium bicarbonate. Reconstitute with sterile buffer. Avoid extreme high and low pH.
Extra Details:: Human Chorionic Gonadotropin (HCG) is a glycoprotein, which is secreted in large quantities by normal trophoblasts. It is present only in trace amounts in non-pregnant urine and sera and rises sharply during pregnancy. HCG is composed of two non-identical, non-covalently linked polypeptide chains designated as the a-and b-subunits. The a-subunit of HCG is nearly identical to that of thyroid stimulating hormone (TSH), follicle stimulating hormone (FSH), and luteinizing hormone (LH). A germ cell tumor which is positive for cytokeratin, placental alkaline phosphatase (PLAP), and HCG but negative for EMA and AFP is probably a choriocarcinoma. Applications: Suitable for antigenic applications in immunological protocols. Recommended Dilutions: Optimal dilutions to be determined by researcher. Biological Activity: Specific Activity = >1,000 IU/mg (WHO 1st IRP (75/551) Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20°C. Reconstitute with sterile buffer. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Shipping Conditions:: Blue Ice