Not available outside of the UK & Ireland.
Analysis Note
The biological activity is measured by its ability to stimulate the proliferation of human MCF-7 cells grown under serum-free conditions.
Biochem/physiol Actions
Growth factor ligand for ErbB3 and ErbB4 receptor tyrosine kinases. The binding of HRG results in receptor dimerization and receptor trans-autophosphorylation. The phosphorylated receptors recruit cellular signaling proteins, initiating signaling pathways.
This product has met the following criteria: