Look up: igm

1. IgM
   IgM: Immunoglobulin M, a major class of immunoglobulins. IgM includes the antibodies that are usually produced first in an immune response and are later replaced by other types of antibodies.
   Found on http://www.medterms.com/script/main/art.
   
   
2. IgM
   (= macroglobulin) An IgM molecule (970 kD) is built up from five IgG type monomers joined together, with the assistance of J chains, to form a cyclic pentamer. IgM binds complement and a single IgM molecule bound to a cell surface can lyse that cell. IgM is usually produced first in an immune response before IgG. The human red cell isoantibodies are IgM antibodies. Heavy chain ( mchain) is rather larger than the heavy chains of other immunoglobulins.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
3. IgM
   Synonym for immunoglobulin M ... <immunology> An immunoglobulin M molecule (970 kD) is built up from five immunoglobulin G type monomers joined together, with the assistance of J chains, to form a cyclic pentamer. ... Immunoglobulin M binds complement and a single molecule bound to a cell surf...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. IgM
   immunoglobulin M; see immunoglobulin.
   Found on http://www.encyclo.co.uk/local/21001
   
   
5. IgM
   (from the article `antibody`) Antibodies are grouped into five classes according to their constant region. Each class is designated by a letter attached to an abbreviation of the ... ...viruses by binding to them. With two antigen binding sites per protein unit, an antibody can also precipitate the antigen by cross-linking in a ... I...
   Found on http://www.britannica.com/eb/a-z/i/7