#precursor cell

• Adenoblast — An immature, undifferentiated embryonic cell from which glandular structures and the secretory epithelium of the organism subsequently develop. This structural cellular element plays an essential role in organogenesis, undergoing a series of divisions and biochemical specializations to form the functional components of the endocrine and exocrine systems.
• Angioblast — An early embryonic mesodermal cell of a pluripotent nature, derived from the mesoderm, which constitutes the direct precursor of the endothelial cells that line the interior of blood vessels. In a structural and ontogenetic context, these cells migrate and organize into isolated cellular cords (blood islands), initiating the process of vasculogenesis fundamental for forming the embryo's primitive circulatory system.
• Angioplast — A rare terminological variant or structural synonym for 'angioblast', denoting an immature embryonic precursor cell of a pluripotent nature that originates from the mesoderm and differentiates directly into a capillary endothelial cell. In an ontogenetic and laboratory context, these structural precursors organize into compact cellular cords to form the first primitive vessels during embryonic vasculogenesis.