It means a build up of lymph fluid that causes swelling in an area of the body. Lymph fluid is in all body tissues. It carries fluid and waste products away from the body tissues. It comes from tiny blood vessels into the body tissues and then normally drains away in tubes or channels called lymph vessels.n some types of cancer, doctors now do a test called a sentinel node biopsy. This can reduce the need to remove all the lymph nodes, which helps to reduce the risk of lymphoedema. The sentinel node is the first lymph node (or first few nodes) that fluid drains to from the area of the tumour.
Antheraea polyphemus. Antheraea polyphemus (polyphemus moth) is a North American member of the family Saturniidae, the giant silk moths. It is a tan-colored moth, with an average wingspan of 15 cm (6 in). The most notable feature of the moth is its large, purplish eyespots on its two hind wings.
Biston betularia f. typica, the light-coloured peppered moth. The evolution of the peppered moth has been studied in detail over the last 150 years. At first, almost all of the moths were light coloured. This gave them camouflage against the light-coloured trees and lichens where they rested during the day. As pollution increased during the Industrial Revolution in England, many of the lichens died out. The trees became blackened by soot, and most of the light-coloured moths, or typica, became rare. At the same time, the dark-coloured, or melanic, moths, c