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Eczema: an acute or chronic allergic skin disease characterized by redness, oozing vesicles and the formation of crusts and squamata.
Edema: pathological infiltration and retention of fluid in a tissue of the body. In the skin, it is manifested by a painless swelling.
Endotoxin: a heat-stable toxin associated with the outer membranes of certain gram-negative bacteria. Endotoxins are not secreted and are released only upon lysis of the cells. They are composed of complex lipopolysaccharide molecules. The polysaccharide unit (somatic O antigen) is responsible for antigenicity; the phospholipid moiety (lipid A) is the source of toxicity.
Eosinophil or Polymorphonuclear eosinophil: "leukocyte" characterized by a nucleus with 2 lobes, and by the fact that it contains large granulations (grains) which have a pronounced affinity for acid stains (low pH), such as eosin.
Erythema: congestive redness of the skin which disappears in response to pressure.
Etiology: the study of causes of diseases (by extension, and excessively, this term is used to denote the very causes of these diseases).
Exudation (plasma): escape of protein-rich
fluids (plasma) from blood vessels in the early stages of
inflammation.