| class I a.’s |
major histocompatibility antigens found on virtually every cell, human erythrocytes being the only notable exception; they are found on molecules consisting of two noncovalently bound chains. One, a 44,000-dalton polymorphic glycoprotein partially embedded in the cell membrane, is determined by an MHC gene (HLA-A, -B, or -C in humans); the other, β2-microglobulin, a 12,000-dalton nonpolymorphic protein, is determined by a non-MHC gene. Class I antigens are the classic histocompatibility antigens recognized during graft rejection and are also the antigens involved in MHC restriction (q.v.).
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| class II a.’s |
major histocompatibility antigens found only on immunocompetent cells, primarily B lymphocytes and macrophages; they are found on molecules consisting of two noncovalently bound chains, the 34,000-dalton α chain and 29,000-dalton β chain, both glycoproteins partially embedded in the cell membrane and both determined by MHC genes. The human HLA-D, -DR, -DQ, -DT, -MB, -MT, and -Te loci are all associated with antigenic determinants on class II antigen molecules.
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| class III a.’s |
a term used to refer to nonhistocompatibility antigens mapping in the major histocompatibility complex, e.g., the complement components C2, C4, factor B.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| class s. |
the mechanism by which a B cell or plasma cell switches from production of IgM to production of IgG, IgA, or IgE. See immunoglobulin genes, under gene.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| classic a. |
ideokinetic a.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| class | conflict between social or economic classes (especially between the capitalist and proletariat classes) |
|---|---|
| class | conflict between social or economic classes (especially between the capitalist and proletariat classes) |
| class | yellow-green algae |
| class | class of fungi coextensive with subdivision Zygomycota |
| class | a lawsuit brought by a representative member of a large group of people on behalf of all members of the group |
| class | (used of society) "American society is becoming increasingly stratified" |
| class | a creation of the highest excellence |
| class | an artist who has created classic works |
| class | characteristic of the classical artistic and literary traditions |
| class | adhering to established standards and principles |
| class | inherited form of hemochromatosis |
| class | (fine arts) of or characteristic of a form or system felt to be of first significance before modern times |