. "114179144"@en-us . . . . "115031866"^^ . "IgM"@en-us . . "0"^^ . . . "0"^^ . . "immunoglobulin M"@en-us . . "immunoglobulin M"^^ . "one of the five major classes of immunoglobulins; involved in fighting blood infections and in triggering production of immunoglobulin G"@en-us . . . "15031866-n"^^ .