The human lymphatic system is a huge network of tubes that drain and transfer protein-rich fluid from tissues to lymph nodes. When the machinery malfunctions and the lymphatic vessels fail to drain properly, fluid builds up in the tissues, causing painful swelling known as lymphedema.
Washington D.C.[USA], July 27 (ANI): Turns out, vessels connecting the brain and the immune system play critical roles in both Alzheimer's disease and decline in cognitive ability that comes with time.