Before revision: The first of which is their ability to divide or self-renew indefinitely, and the secondis ly, their ability to generate all the cell types of the organ from which they originate, potentially regenerating the entire organ from a few cells.
After revision: The first of which is their ability to divide or self-renew indefinitely, and the second their ability to generate all the cell types of the organ from which they originate, potentially regenerating the entire organ from a few cells.