Aldehyde oxidase helps in the oxidation of carbohydrates, and sulfite oxidase helps to detoxify sulfites, which used to be common food preservatives, and which some sensitive individuals have a severe allergic reaction to. While sulfur and molybdenum compete for uptake in plants, supplementing either one in humans helps uptake of the other by inhibiting copper, which is an antagonist to sulfur and molybdenum, so for practical purposes, they work as synergists with one another. There is an identical relationship between vanadium and selenium against chromium, resulting in the same synergism... Full Text