Mouse Insulin Like Growth Factors 2 (IGF-II) is a 7.34 kDa member of the Insulin-like Growth Factors with 67 amino acid residues. IGF-II is mainly expressed from early embryonic somatic tissues, liver, and epithelial cells lining the surface of the brain. IGF-II is mediating the embryonic development and placental growth, while also promoting tumor growth. IGF-II affects regulation of cell proliferation, growth, migration, differentiation and survival via binding to IGF-I receptor.