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  2. Hepatitis A - Wikipedia

    en.wikipedia.org/wiki/Hepatitis_A

    IgM antibody is only present in the blood following an acute hepatitis A infection. It is detectable from 1–2 weeks after the initial infection and persists for up to 14 weeks. The presence of IgG antibodies in the blood means the acute stage of the illness has passed and the person is immune to further infection. IgG antibodies to HAV are ...

  3. Anti-mitochondrial antibody - Wikipedia

    en.wikipedia.org/wiki/Anti-mitochondrial_antibody

    Anti-mitochondrial antibodies (AMA) are autoantibodies, consisting of immunoglobulins formed against mitochondria, [1] primarily the mitochondria in cells of the liver.. The presence of AMA in the blood or serum of a person may be indicative of the presence of, or the potential to develop, the autoimmune disease primary biliary cholangitis (PBC; previously known as primary biliary cirrhosis).

  4. Autoimmune hepatitis - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_hepatitis

    The Internal Autoimmune Hepatitis Group developed a standardized scoring system for clinical diagnosis in population studies but lacks value in individualized cases. [17] A simplified scoring system for clinical use incorporates titers of autoantibodies, total IgG levels, liver histology, and the exclusion of viral hepatitis for diagnostic scoring.

  5. Seroconversion - Wikipedia

    en.wikipedia.org/wiki/Seroconversion

    Anti-core antibodies (anti-HBc) are the first antibodies produced by the body, first in short-term IgM (anti-HBc IgM), and subsequently in long-term IgG; while levels of IgM anti-HBc will peak around sixteen weeks after exposure and fall within about seven to eight months, [63] [64] IgG anti-HBc will remain detectable in the serum as a sign of ...

  6. Immunoglobulin G - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_G

    The water-accessible surface area of an IgG antibody. Immunoglobulin G (IgG) is a type of antibody. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in blood circulation. [1] IgG molecules are created and released by plasma B cells. Each IgG antibody has two paratopes.

  7. Regular and irregular antibodies - Wikipedia

    en.wikipedia.org/wiki/Regular_and_irregular...

    Regular and irregular antibodies are two main groups of antibodies when classified roughly on the timing and triggering event of antibody production. Regular antibodies usually refer to the isohemagglutinins, directed against antigens of the ABO system. They appear in the first years of life. They are of the IgM type. [1]

  8. Viral hepatitis - Wikipedia

    en.wikipedia.org/wiki/Viral_hepatitis

    Hepatitis A or infectious jaundice is caused by hepatitis A virus (HAV), a picornavirus transmitted by the fecal-oral route often associated with ingestion of contaminated food. It causes an acute form of hepatitis and does not have a chronic stage. A patient's immune system makes antibodies against HAV that confer immunity against future ...

  9. Hepatitis A and B vaccine - Wikipedia

    en.wikipedia.org/wiki/Hepatitis_A_and_B_vaccine

    Combined hepatitis A and B vaccine, is used to provide protection against hepatitis A and hepatitis B. [3] [7] It is given by injection into muscle.[8]It is used in areas where hepatitis A and B are endemic, for travelers, people with hepatitis C or chronic liver disease, and those at high risk of sexually transmitted diseases.