Answer:
imma put this in the easiest explanation you have the embryonic and the progenitor cells.
Step-by-step explanation:
Stem cells are cells that can differentiate into other types of cells, In mammals, there are two broad types of stem cells: embryonic stem cells, which are isolated from the inner cell mass of blastocysts in early embryonic development, but their is also the adult stem cells, which are found in various tissues of fully developed mammals. In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing adult tissues