Respiratory system is a biological system composed of specific organs and structures used for gas exchange in animals and plants. The human body's gas exchange organ, the lung, is located in the chest cavity, and its fragile tissues are protected by the skeletal and muscular thoracic cavity. The lungs provide a continuous supply of oxygen to human tissues and remove carbon dioxide which is a gaseous waste in the blood. Learn more: Stem Cell Therapy for Respiratory System Diseases
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