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Description:This trichrome-stained photomicrograph revealed some of the cellular constituents that were present in a sample of pus, which by definition, is composed of white blood cells (WBCs), otherwise known as leukocytes, cellular necrotic debris, and thin and watery serous fluid.
Pus is formed in response to what the body deems an attack on its normal healthy state, usually in response to the invasion by a pathogenic entity such as a bacterium or fungus, or to the presence of a foreign body, as in the case of a splinter. The ensuing inflammatory process, which begins in response to these events, attracts these white blood cells that act as part of the body’s defense mechanism, which in turn directly attack the invaders, and clean up the debris associated with the inflammatory process through the processes of phagocytosis and pinocytosis.
High Resolution: Click here for hi-resolution image (18.34 MB)
Content Providers(s):CDC/ Dr. Mae Melvin
Creation Date:1977
Photo Credit:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.