A precursor cell is a type of cell that has the potential to develop into a more specialized cell type. These cells are often found in various tissues and play a crucial role in growth, development, and tissue repair. They are not fully differentiated, meaning they can still divide and transform into specific cell types, such as muscle cells, nerve cells, or blood cells. In the context of hematopoiesis, precursor cells are essential for producing different types of blood cells, including red blood cells and white blood cells. They are typically located in the bone marrow and can respond to various signals in the body to differentiate into the necessary cell types for maintaining health and function.