Angiogenesis Inducing AgentsNeovascularization, PhysiologicAngiogenic ProteinsNeovascularization, PathologicVascular Endothelial Growth Factor AVascular Endothelial Growth FactorsEndothelial Growth FactorsEndothelial CellsLymphokinesFibroblast Growth Factor 2Angiogenesis InhibitorsEndothelium, VascularVascular Endothelial Growth Factor Receptor-1Vascular Endothelial Growth Factor Receptor-2Angiopoietin-1Angiopoietin-2Cells, CulturedPregnancy ProteinsCapillariesThrombospondin 1Receptor, TIE-2IschemiaCorneal NeovascularizationBlood VesselsReceptors, Vascular Endothelial Growth FactorCell MovementAllantoisChorioallantoic MembraneThymidine PhosphorylaseAntigens, CD31HindlimbTropaeolaceaeHuman Umbilical Vein Endothelial CellsImmunohistochemistryCell ProliferationRNA, MessengerIntercellular Signaling Peptides and ProteinsChorion