Place a C after the product code above e.g. FB-1001C The calcium depletion is achieved using chromatography columns (ion-exchange resin). This resin is selective for divalent cations over monovalent cations (It follows that copper, iron, magnesium, zinc etc. levels will be lowered too) . This serum may show some reduced growth promotion of cells requiring the presence of calcium or other divalent cations.
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