Tissue biology has emerged as an interesting field of study. Differentiation of cells in
different tissues follows similar rules, although it involves different tissue-specific genes,
proteins, and extracellular matrix components. In tissues such as skin, hematopoietic cells,
intestinal mucosa, and the glands of prostate and bronchus, cell renewal is dependent on
the presence and continual proliferation of tissue-specific stem cells, which reside in specific
histological locations, clearly visible under microscopic examination. Bone marrow …