Kidneys, Human Urinary Organ, Anatomy. Flat Vector Icon illustration. Simple black symbol on white background. Kidneys, Human Urinary Organ, Anatomy sign design template for web and mobile UI element. Kidneys, Human Urinary Organ, Anatomy. Flat Vector Icon illustration. Simple black symbol on white background. Kidneys, Human Urinary Organ, Anatomy sign design template for web and mobile UI element.