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D-Aminoacidsareusuallyviewedasunnaturalisomers.Theyoccuronlyoccasionallyinsizablequantities[1].InPhascolosomaarcuatum,freealanineaccumulatewhenexposedtoenvironmentalstress.Whentheconcentrationofthisaminoacidwastestedusingenzymaticmethods,[2]onlyapproximat