“…Stem cells are the âmaster cellsâ of tissues and organs of the body, which undergo differentiation to serve mainly for restoration or replacement of worn out, injured, or diseased cells of various tissues and organs , such as heart, bone marrow, brain, muscle tissues, skin, and so on, and have been adapted for their regenerative roles . There are two major types of stem cell in mammals: embryonic stem cells (ESC) which are somatic cells capable of differentiating to become part of all cell types found in tissues and organs of the body such as heart, nervous, immune system, etc, therefore, have been termed is pluripotent . ESC originates from the inner mass cells of a blastocyst .…”