[Evaluation of the uptake of crystalline amino acid preparations based on the concentration of urea in the blood and tissues]. / Otsenka usvoeniia preparatov kristallicheskikh aminokislot po kontsentratsii mocheviny v krovi i tkaniakh.

The assimilation of polyamine, levamine and "new" alvesin has been experimentally assessed by blood and tissue urea concentrations. It has been established that polyamine was best assimilated and was followed by levamine and "new" alvesin.