Nodal protein plays a key role in embryonic development and is indispensable for mesoderm formation and axial patterning. As a homodimer linked together by disulfide bonds, Nodal helps form the molecular framework that controls fundamental developmental pathways, ensuring the correct establishment of mesodermal tissue and axial structure during embryogenesis. Animal-Free Nodal Protein, Human (His) is the recombinant human-derived animal-FreeNodal protein, expressed by E. coli , with C-His labeled tag. This product is for cell culture use only.