| major histocompatibility complex |
two classes of molecules on cell surfaces. MHC class I molecules exist on all cells and hold and present foreign ANTIGENS to CD8 CYTOTOXIC T LYMPHOCYTES if the cell is infected by a VIRUS or other MICROBE. MHC class II molecules are found on the IMMUNE SYSTEM's ANTIGEN PRESENTING CELLS and display antigen to activate CD4 CELLS.
출처: www.gmhc.org/health/glossary3.html
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| major depressive episode |
Depressed mood and/or loss of interest in pleasure in all or almost all activities for a period of at least two weeks.
출처: www.dphilpotlaw.com/html/glossary.html
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| major depression |
A period of at least 2 weeks when you experience the loss of interest or pleasure in doing most things and have at least four of the following: change in appetite, weight, sleep, work; decreased energy; feelings of worthlessness or guilt; difficulty thinking, concentrating or making decisions; or recurrent thoughts of death or of killing yourself.
출처: www.dphilpotlaw.com/html/glossary.html
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| major histocompatibility complex |
A group of genes that control aspects of the immune response. The products of these genes, the histocompatibility antigens, are present on every cell of the body and serve as markers to distinguish self from nonself cells. See also Antigen; Histocompatibility Testing.
출처: www.aidsinfobbs.org/letters/m.html
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| major histocompatibility complex |
Special marker proteins that, when linked to antigen fragments on an antigen-presenting cell, enable T cells to recognize and neutralize the antigen. Cytotoxic T cells recognize or "see" antigens in the context of MHC class I molecules. Helper T cells recognize or "see" antigens in the context of MHC class II molecules.
출처: www.melanomacenter.org/glossary/m.html
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