IUGR rupiahs dulcamara FGF1 U0126 VEGF FGF2 neurite mitogens PGRs IGF1 angiopoietin rBGH NGF hormone neurotrophins Perlecan Epidermal bFGF Myostatin Hepatocyte Differin CAGR Durabolin Oncogenes epitaxial Syndecan IGF Auxins spurt Gibberellins faradaic EGFR 1965b phytohormone 13Qp79 auxins 13Qp96 secretagogue