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Structure of typical metal ion in the absence of chelate. Chelates in animal feed is jargon for metalloorganic compounds added to animal feed. The compounds provide sources of various metals that improve the health or marketability of the animal. Typical metals salts are derived from cobalt, copper, iron, manganese, and zinc.
Chelate complexes of gadolinium are often used as contrast agents in MRI scans, although iron particle and manganese chelate complexes have also been explored. [ 21 ] [ 22 ] Bifunctional chelate complexes of zirconium , gallium , fluorine , copper , yttrium , bromine , or iodine are often used for conjugation to monoclonal antibodies for use in ...
As a free solubilized aqueous ion, gadolinium(III) is highly toxic, but the chelated compounds are generally regarded as safe for individuals without kidney disease. Free Gd 3+ has a median lethal dose of 0.34 mmol/kg (IV, mouse) [27] or 100–200 mg/kg, but the LD50 is increased by a factor of 31 times [28] when Gd 3+ is chelated. [29]
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Manganese is a chemical element; it has symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. It is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels. It improves strength ...
Manganese is also important in photosynthetic oxygen evolution in chloroplasts in plants. The oxygen-evolving complex (OEC) is a part of photosystem II contained in the thylakoid membranes of chloroplasts; it is responsible for the terminal photooxidation of water during the light reactions of photosynthesis , and has a metalloenzyme core ...