A Lymphatic Approach to Tissue Injury

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Abstract
WHEN any organ or tissue is damaged or injured an inflammatory reaction takes place in the damaged area. The main signs of such an inflammatory response —redness, heat, and swelling — are of vascular origin. The redness and heat result from an increase in the size of the small blood vessels that are normally invisible to the naked eye. Swelling results from the passage of fluid from the small blood vessels into the space around them. During injury the walls of the blood vessels become more permeable to water and larger molecules such as proteins. The presence of these materials . . .