by the dansylation of sound and carious dentin nine dansyl amino acids , such as aspartic acid , glutamic acid , serine , glycine , alanine , proline , valine , leucine and tyrosine , were detected in the sound dentin , and in addition to these nine amino acids isoleucine was found in carious dentin .
C0001898
alanine
C0002520
amino acids