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Chilblains (/ËtÊÉªlbleÉªnz/) â also known as pernio, Chill Burns and perniosis â is a medical condition that occurs when a predisposed individual is exposed to cold and humidity, causing tissue damage. It is often confused with frostbite and trench foot.
chitin ous layer [Gr. chiton-an outer covering, tunic]. A thick, clear layer of an Ascaris egg shell which is composed of chitin and protein and provides a protective coating located between the fertilization membrane and the ascaroside layer.hiton, a tunic, undergarment]. A structural polysaccharide of an amino sugar found in many fungi and in the exoskeleton s of all arthropods. chlorophyll ... ~ /KITE-in/ A structural polysaccharide that is the main component of the exoskeleton s of all arthropods and the cell wall s of fungi.