See Also: properdin system(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
properdin(dictionary)
properdin(medicine)
properdin factor E(medicine)
properdin factor A(medicine)
properdin factor B(medicine)
properdin factor d(medicine)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)

properdin system (medicine)


properdin system


An immunological system that is the alternative pathway for complement, composed of several distinct proteins that react in a serial manner and activate C3 (third component of complement), seemingly without utilizing components C1, C4, and C2; in addition to properdin, the system includes properdin factors A (native C3), B (C3 proactivator), D (C3 proactivator convertase), and perhaps at least one other, E; the system can be activated, in the absence of specific antibody, by bacterial endotoxins, by a variety of polysaccharides and lipopolysaccharides, and by a component of cobra venom.