Pluripotent Embryonic stem cells also known as ESCs are derived from the inner mass cells of an undifferentiated embryo, these cells can grow into any of the three derivatives primary germ layers: endoderm (intestines colon, stomach, pancreas, liver), mesoderm (bone, muscle, connective tissue, cartilage, lymphatic system, genitourinary system, circulatory system etc.) and ectoderm (spinal cord, brain, epidermis etc.)