positive regulation of immune response | adaptive immune response | complement activation | regulation of immune system process | response to metal ion | defense response | response to inorganic substance | regulation of immune response | response to stimulus | positive regulation of immune system process | response to stress | response to iron ion | adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains | nitrogen compound metabolic process | leukocyte mediated immunity | protein activation cascade | humoral immune response | activation of immune response | protein metabolic process | complement activation, classical pathway | metabolic process | immune response | organic substance metabolic process | humoral immune response mediated by circulating immunoglobulin | B cell mediated immunity | innate immune response | immunoglobulin mediated immune response | immune system process | macromolecule metabolic process
protein-containing complex | collagen trimer | extracellular region