Complement, an integral part of the innate immune system, is a complex cascade of interacting proteins,some of which are soluble serum proteins, whereas others are membrane-anchored receptor proteind. Complement can be activated by a variety of comples molecules, such as antigen-antibody complexes, aggregated antibody, endotoxin, complex sugars, and nucletic acids.

The antibody is stable for at least 1 year from the date of receipt when stored at -20°C to -70°C. Reconstituted antibody can also be aliquotted and stored at 4°C for 1 month or at -20°C to -70°C in a manual defrost freezer for many months without detectable loss activity. Please avoid freeze-thaw cycles.