PATHOLOGY

Detailed explanation-1: -Stem cell proliferation. Stem cells divide to form one daughter cell that remains a stem cell and a second that differentiates (e.g., to an intestinal epithelial cell). A good example of the continual proliferation of stem cells is provided by blood cell differentiation.

Detailed explanation-2: -1. Statement a: Stem cells are undifferentiated or unspecialized cells. They can give rise to any kind of cell that is seen in the body. Thus, the statement is correct.

Detailed explanation-3: -Stem cells undergo cell proliferation to produce proliferating “transit amplifying” daughter cells that later differentiate to construct tissues during normal development and tissue growth, during tissue regeneration after damage, or in cancer.

Detailed explanation-4: -Stem cells do divide by mitosis and this makes them very important for replacing lost or damaged specialized cells.