Blood vessel formation when new vessels emerge from the proliferation of pre-existing blood vessels [goid 1525] [evidence IEA]; The orderly movement of cells from one site to another along a substrate such as the extracellular matrix; the migrating cell forms a protrusion that attaches to the substrate [goid 6929] [pmid 8617204] [evidence TAS]; The cascade of processes by which a signal interacts with a receptor, causing a change in the level or activity of a second messenger or other downstream target, and ultimately effecting a change in the functioning of the cell [goid 7165] [pmid 8617204] [evidence TAS]; The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult) [goid 7275] [evidence IEA]; Any process that activates or increases the rate or extent of cell proliferation [goid 8284] [pmid 8617204] [evidence TAS]; Morphogenesis of an organ. An organ is defined as a tissue or set of tissues that work together to perform a specific function or functions. Morphogenesis is the process by which anatomical structures are generated and organized. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions [goid 9887] [evidence IEA]; The process by which the anatomical structures of embryonic epithelia are generated and organized. Morphogenesis pertains to the creation of form [goid 16331] [evidence IEA]; The process whereby relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism's life history. Differentiation includes the processes involved in commitment of a cell to a specific fate [goid 30154] [evidence IEA]; The series of molecular signals generated as a consequence of vascular endothelial growth factor receptor binding to one of its physiological ligands [goid 48010] [evidence IEA]