Precursor cells are types of stem cells that are committed to developing into a particular type of cell. These cells are also known as “blast.” They have lost their potency to differentiate into any type of cell. For this reason, precursor cells can also be termed as “unipotent” stem cells.
A precursor cells serve as the intermediate cell before it becomes differentiated after being a stem cell. They are derived from the stem cells. Precursor cells are also known to be incapable of self-renewal.
A stem cell is a cell that has the ability to develop specialized kinds of cells. A cell is said to be differentiated when it becomes specialized to carry out specific functions.