Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test. Vitamin B12 deficiency can be caused by many factors, one of which is pernicious anemia, a condition resulting in deficient production of intrinsic factor in the parietal cells of the stomach. Intrinsic factor is a protein that is needed to assist in the absorption of vitamin B12 into the small intestine.
Vacuum forming offers processing advantages over competitive processes such as fabrication, blow molding, injection blow molding, rotational molding, and injection molding. Because tooling costs are lower, relatively large parts can be economically fabricated.acuum forming offers processing advantages over competitive processes such as fabrication, blow molding, injection blow molding, rotational molding, and injection molding. Because tooling costs are lower, relatively large parts can be economically fabricated.
In a vacuum, a beam of ions or electrons may be formed. In other conductive materials, the electric current is due to the flow of both positively and negatively charged particles at the same time. In still others, the current is entirely due to positive charge flow. For example, the electric currents in electrolytes are flows of positively and negatively charged ions.