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Liquefactive necrosis is good for your body, especially your brain (due to the beneficial liquids produced) but coagulative necrosis is bad due to the clumping and coagulation (i.e. clotting) that occurs.
Coagulation necrosis is the "acute" necrosis in which the protein fibers become denatured and everything turns into a semi-solid mess of dead tissue. Liquefactive necrosis is a more "chronic" necrosis in which the dead tissue is digested into a liquid which can then be removed by the macrophages.
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What is the difference between apoptosis and necrosis?
Apoptosis is cell death via shrinkage, whereas oncotic necrosis is cell death via swelling. The term necrosis was used for cell death before these two different processes (shrinkage and swelling) were discovered. For this reason, it is still sometimes used to refer to both apoptosis and oncotic necrosis. However, necrosis is also sometimes used to mean only cell death via swelling. To avoid confusion, it is best to use the terms apoptosis and oncotic necrosis (and not just 'necrosis').
What is the difference between necrosis and infarction?
Necrosis means that a cell or a group of cells die due to injury (heat, pressure etc), diseases (infections), or other pathological state. The term "infarction" essentially is synonymous with "ischemic necrosis" which means necrosis (cell death) from the lack of blood (ischemia). Ischemia can be caused by the occlusion of the arterial supply or venous drainage for a particular tissue.
What is the difference between necrosis and ischemia?
necrosis is death of cells with underlying/ or death of cells that cause inflammation. necrosis has to have an underlying injury. ischemia is decreased blood supply to tissues/ cells due to obstruction/ constriction of vasculature - indeed, this is an injury, and can lead to necrosis of cells if not resolved quickly! Note that apoptosis is programmed cell death - i.e. nucleus control is involved, and there is no inflammation - it is clean cell death! this is awesome.
What is Carnoy's fixative?
Fixatives are classified as coagulative fixatives and cross-linking fixatives. Carnoy's fixative is a coagulative fixative. Coagulative fixatives change the shape or structure of protein molecules without binding to them, while cross-linking fixatives bind chemically to protein molecules at one or more points. In cross-linking fixatives molecules are linked together to form an insoluble latticework by forming chemical bridges between protein chains. Carnoy's fixative is a coagulative fixative.
What does the medical abbreviation TNF mean?
Tumor Necrosis Factor or TNF, is a cytokine which is involved in the inflammatory process. Cytokines are chemical substances which deliver messages between cells in the body.
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Lichen planus is a self allergy of the skin or mouth which affects mostly middle age people. Avascular necrosis is the dead bone tissue caused by lack of blood supply which is also found usually in middle age people
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