{HEAD ~ Mercaptoalcylamino acids} are generally susceptible to {TAIL ~ inactivation} by oxidation in vivo and decomposition in process of manufacturing themselves or their preparations or with the elapse of time because of the compounds having chemically and biologically active sulfhydryl group 
{ HEAD ~ Mercaptoalcylamino acids } are generally susceptible to { TAIL ~ inactivation } by oxidation in vivo and decomposition in process of manufacturing themselves or their preparations or with the elapse of time because of the compounds having chemically and biologically active sulfhydryl group
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