[Term]
id: GO:0071739
name: IgD immunoglobulin complex, circulating
namespace: cellular_component
def: "A protein complex composed of two identical immunoglobulin heavy chains of the IgD isotype and two identical immunoglobulin light chains, held together by disulfide bonds, and present in the extracellular space, in mucosal areas or other tissues, or circulating in the blood or lymph." [GOC:add, ISBN:0781765196, PMID:11282392]
comment: Note that an IgD immunoglobulin complex has the function of antigen binding if a suitable antigen is available.
synonym: "IgD antibody" EXACT [GOC:add]
is_a: GO:0032991 ! protein-containing complex