Silicon readily bonds with oxygen and is rarely found in nature in its pure form. You've likely seen silicon as silicon dioxide or silica, better known as quartz, which is the most common component of sand.Silica also comes in other mineral forms, such as flint, jasper and opal.ilicon is the 14th element on the periodic table. It's a metalloid, meaning it has properties of both metals and nonmetals, and is the second most abundant element in the Earth's crust, after oxygen.
Heterophile antibodies are human antibodies with the ability to bind to animal immunoglobulins, thereby possibly interfering with the interaction between animal-derived antibodies and the antigen [hCG in our discussion], which are components of all immunoassays.
The receptor can be a biological component of the particle, an attached antibody, or antibody in solution. A reverse reaction is one in which the antibody is attached to a particle and the addition of the antigen causes the mixture to clump.