α-tocopherol concentrations in equine serum and cerebrospinal fluid after vitamin E supplementation.

ANIMAL and human studies have shown that the biological activity of vitamin E sources is dependent on their particular stereochemistry and chemical form ([Ingold and others 1987][1], [Ferslew and others 1993][2], [Acuff and others 1994][3], [Kiyose and others 1995][4]). The two most common