somatotropin IUGR 13Qp79 13Qp96 Myostatin polyplacophorans fibroblast glypican sympodial FGF1 28Qp72 Methoprene CTGF PDGF GHRH secretagogue XLD Urokinase Inhibin HGF Gibberellins FGF2 Irevna epitaxial spurt CAGR Desulfurococcales monopodial metaphysis phytohormones Tyrannosaurids MYO Activin U0126 Hokkek VEGF rBGH GSDP recapitalizations